Top IoT App Development Companies in London
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Explore Reviewed IoT App Development Companies in London — Find Skilled IoT App Developers for Your Project
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15 Companies
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London
5.0 (3 Reviews)
49
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
49
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Powering Enterprises with AI and Innovation
Seasia Infotech is an AI-driven digital engineering company with 20+ years of experience building enterprise-grade technology solutions. We help organizations design, develop, and scale secure and high-performance digital products that drive transformation and long-term growth. We operate at the intersection of AI, cloud computing, enterprise engineering, and product innovation, enabling businesses to adopt modern technologies faster and more efficiently. Our focus is on solving real-world business problems using intelligent systems, automation, and scalable architecture. We have worked with startups, enterprises, and global companies across industries such as healthcare, fintech, legaltech, e-commerce, education, logistics, and energy. Our delivery spans custom software, mobile apps, SaaS platforms, AI solutions, and cloud-native systems. At Seasia Infotech, we believe software should continuously evolve with business needs. As an AI-first engineering organization, we embed intelligence, governance, and measurable outcomes into every solution we deliver. Our Expertise Custom Software Development Enterprise Solutions (ERP, CRM, CMS) Enterprise Software Engineering & Modernization AI & Machine Learning Solutions Generative AI (Chatbots, Image & Text Generation) Agentic AI & Intelligent Automation Cloud Computing & DevOps Mobile App Development (iOS, Android, Cross-Platform) Web Development (Frontend & Backend) Data Engineering & Big Data Analytics UI/UX Design & Product Strategy Quality Engineering & AI-Powered Testing Blockchain Development IoT Solutions AR/VR Solutions Cybersecurity & Enterprise Security E-commerce Development Low-Code / No-Code Development Digital Transformation & Smart Automation We are committed to delivering high-quality, transparent, and outcome-driven solutions that help businesses reduce costs, improve efficiency, and accelerate innovation. Our goal is to empower organizations with future-ready digital ecosystems. Seasia Infotech continues to shape the future of digital transformation through AI-first thinking and deep engineering expertise.
See all 40+ Portfolios
Undisclosed/hr
$5,000+
500 - 999
London, UK
Verified Client Review
E-Commerce Engine for Web Dev Firm
Reviewed by: William Akuoko, CEO at ADEHYEE INFOTECH LTD View all 3 Reviews
5.0 (8 Reviews)
5.0 (8 Reviews)
45
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
45
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Your trusted partner for guaranteed software delivery.
ELEKS is a global provider of software engineering and technology consulting services. As a trusted partner, we guarantee engineering excellence, quality, and transparency at every step. The company’s presence spans three continents, with over 2000 multi-skilled engineers and a track record of more than 1000 successful end-to-end projects. For over 30 years, we have been developing custom software solutions that fuel business growth for our clients across industries, including logistics, finance, insurance, energy, retail, agriculture, healthcare, government, and more. With ELEKS, businesses can create software solutions from scratch or use our pre-built delivery accelerators to get their software to the market faster. We stand up to the most complex technology and business challenges, employing a mix of pioneering and traditional methods to design and implement full-cycle products that fulfil your software vision.
See all 16+ Portfolios
$50-$99/hr
$50,000+
1,000 - 9,999
London, UK
Verified Client Review
Development and Design for Industrial Manufacturing Company
Reviewed by: Christoph Kiener, Principal of Functional Design at Siemens Corporate Technology View all 8 Reviews
5.0 (3 Reviews)
35
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
35
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
GeekyAnts - App Design and Development Studio Turning Ideas Into Reality
GeekyAnts is a global leading web and mobile app development company that offers design and development services to help your business transform digitally.
View GeekyAnts UK Ltd Profile
$50-$99/hr
$50 - $96
500+
London, UK
Verified Client Review
Web Development & Design for NFC Business Card Company
Reviewed by: Hakim Nedjar, CEO at Pixel View all 3 Reviews
0.0 (0 Reviews)
33
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
33
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Salesforce development and implementation consulting partner
Innovadel Technologies is a leading provider of innovative IT solutions, specializing in Salesforce implementation, integration, and support. We empower businesses across diverse sectors with cutting-edge technologies to drive digital transformation and achieve their strategic goals. Our comprehensive service offerings extend beyond Salesforce, encompassing Shopify, WordPress, BigCommerce, software development, custom application development, mobile app development, web development, Cloud Consulting, Data Analytics, and AI/ML Solutions. We are committed to delivering high-quality solutions, exceeding client expectations, and building long-term partnerships. Our deep industry expertise, focus on leveraging the latest technologies, results-oriented approach, and unwavering commitment to customer satisfaction set us apart.
See all 3+ Portfolios
$50-$99/hr
$10,000 - $15,000
50 - 60
London, UK
5.0 (5 Reviews)
28
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
28
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
We build products and teams that help companies grow
Four Ages offers complete software development solutions that are customized to meet the diverse business needs and technological objectives of its clients, ranging in complexity. Tech stack: > Back-end - JavaScript, PHP, Python, Java, Ruby on Rails, C/C++, .Net, Node JS > Front-end - React JS, Angular, Vue > Mobile - iOS, Android, Flutter, React Native > Databases - MongoDB, PostgreSQL, MySql, AWS DynamoDB, Firebase, Couchbase > Cloud - AWS, MS Azure, GCP
View Four Ages Software Profile
$25-$49/hr
$50,000+
10 - 49
London, UK
Verified Client Review
IT Consulting & Custom Software Dev for Ticketing Co
Reviewed by: Riley Allen, Product Owner at Ticketing Co View all 5 Reviews
0.0 (0 Reviews)
27
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
27
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Web and mobile development studio with more than 80 completed projects across healthcare, education, wellness and IoT.
Since 2013, we’ve delivered 80+ mobile, web, and IoT solutions with a strong focus on security, compliance, and usability. Whether starting lean or scaling fast, clients value our transparent communication, clear milestones, and hands-on, flexible teams. We offer full-cycle development, including: Product Discovery & UX/UI Mobile App Development (iOS, Android, Flutter, PWAs) Web & Backend Development (Node/NestJS, .NET) IoT & Wearables (Bluetooth/BLE, SDKs) Gamification & Serious Games QA, Support & Iteration We follow best practices like CI/CD, real-device testing, and code reviews — ensuring each release is stable and future-ready. Start from just 10 hours/week or build a full-time team, risk-free with our 14-day guarantee.
View Diversido Profile
N/A
$10,000+
20+
London, UK
0.0 (0 Reviews)
27
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
27
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Digital Transformation Company
SaaS provider revolutionizing the way businesses manage their operations. We specialize business management solutions for various verticals. Our Products: 1. Laundry Management Solution: From order tracking to invoicing, our solution covers all aspects of your laundry business. 2. Salon Management System to schedule appointments, manage inventory, POS and track employee performance. 3. Gym Management System that simplifies gym administration and helps with the payment collection. 4: Sparkflow: A business management solution for textile industry. Our core areas of expertise encompass: - React, Angular, Node js - HTML5, CSS3, JavaScript - PHP, WordPress - MySQL, MongoDB, PostgreSQL Whether it's for iOS, Android, or cross-platform, we create high-performance, user-centric mobile apps. From concept to deployment, we make apps that include: ? Web App ? Admin Portal ? POS Services: ? Web Development ? App Development Connect with Us We extend our services to clients around the globe, tailoring our solutions to meet the unique needs of businesses in the US, UK, the Middle East, and Africa. Website www.urapptech.com Phone +922133387191
View UrApp Tech Profile
N/A
$2,000 - $19,999
15+
London, UK
4.8 (4 Reviews)
26
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
26
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
A CMMi Level 3 Company
It is one of the leading firms for providing solutions and services to Web Application Development. It utilizes technology to convert a vision into reality on web and mobile. The skilled developers are scalable and flexible to fulfill client requirements. It has a global reputation for delivering creative websites and mobile applications within time and budget. The goal is to combine quality web design development with offshore gains, to give online solutions and considering the latest economic downtrend issues away from clients. Whether you are a small-sized company looking to set up in the market, or a huge enterprise waiting for expansion, they can consider numerous solutions to guide in achieving the targets.
View Dotsquares Profile
$25-$49/hr
$5,000+
250 - 999
London, UK
Verified Client Review
CRM Consulting & Digital Marketing for Energy Company
Reviewed by: Mitchell Thomas, Operations Manager at Think Renewable View all 4 Reviews
5.0 (1 Reviews)
20
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
20
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Innovation In Every Step
Primacy Infotech has been the top Odoo ERP and mobile app development firm since 2015 and is the fastest-growing IT company in Asia. Our organization creates mobile applications and cloud-based enterprise business process automation software for various business operations. We also offer managed software services using the Software as a Service (SaaS) model. Enterprises, SMEs, and startups in India and overseas use these widely available online business process automation tools, such as school management systems, travel portals, LMS portals, e-commerce apps, CRM, project management, production management, and ERP software, to automate vital business processes and systems.
View Primacy Infotech Limited Profile
< $25/hr
$1,000+
2 - 9
Windsor Berks, UK
Verified Client Review
Mobile App Dev for IT Services Company
Reviewed by: S Saha, CEO at Saha Technologies View all 1 Reviews
0.0 (0 Reviews)
0.0 (0 Reviews)
18
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
18
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Dedicated Full Stack Teams
DevGrid is a comprehensive software development company headquartered in the United Kingdom, with two delivery hubs located in Brazil. By merging our robust company culture and talented engineers with your forward-thinking business vision, we drive innovation and digital transformation.
View DevGrid Profile
$50-$99/hr
$25,000+
50 - 249
London, UK
0.0 (0 Reviews)
0.0 (0 Reviews)
3
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
3
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Real users. Real devices. Real impact.
Testbirds is a crowdtesting and application testing company with a London office serving UK businesses alongside its global headquarters in Munich, Germany. Founded in 2011, the company specialises in conversion optimization and UX/UI design, using a global community of more than one million real testers across real devices to evaluate websites, mobile apps, IoT products, and other digital solutions under authentic, real-world conditions. Testbirds' crowdtesting approach covers functional bug testing, structured usability studies, localisation testing, and conversion rate optimisation, giving development and marketing teams high-priority feedback that can be implemented immediately rather than waiting for internal QA cycles. The company's client base includes major international brands such as BMW, Audi, Deutsche Telekom, Allianz, and Western Union, reflecting its experience supporting large-scale, multi-market digital products. Testbirds also offers AI development and market research services, extending its testing capability into chatbot and virtual assistant evaluation as digital products increasingly incorporate conversational AI. Businesses seeking a UK-based conversion optimisation and UX/UI testing partner with proven experience across web, mobile, and IoT platforms will find Testbirds a well-established, globally resourced option.
View Testbirds Profile
N/A
$1,000+
250 - 999
London, UK
0.0 (0 Reviews)
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Nex-Gen Machines
MachiNx is an innovative technology company specializing in AI, IoT, custom hardware, and software development solutions. Founded by experienced engineers and researchers, the company delivers tailored R&D services that help businesses build intelligent, connected products and accelerate digital innovation. Combining expertise in artificial intelligence, embedded systems, and IoT technologies, MachiNx develops scalable, high-performance solutions that improve operational efficiency and support next-generation business growth across multiple industries.
View MachiNx Ltd Profile
$25-$49/hr
$25,000+
2 - 9
London, UK
0.0 (0 Reviews)
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
2
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
Your go to tech recruitment agency in London for engineering and development hiring and job needs
Hexwired Recruitment is a City of London-based technology recruitment agency providing advertising and cybersecurity talent placement alongside broader technical recruitment across engineering, software development, and defence sectors. The agency specializes in sourcing skilled professionals in embedded systems, C++, Python, full-stack development, DevOps, machine learning, and electronics, serving clients across aerospace, energy, telecoms, semiconductor, and fintech industries. With operations spanning London, Reading, Birmingham, and other major UK cities, alongside teams in the US and UAE, Hexwired connects employers with specialized technical talent through a targeted, relationship-driven recruitment process. The agency's advertising expertise helps position client roles effectively to reach the right candidates quickly, while its cybersecurity recruitment focus supports organizations building out security and compliance teams. Businesses seeking advertising and cybersecurity recruitment support, or broader technical hiring across engineering disciplines, will benefit from Hexwired's detailed, sector-specific approach to matching candidates with employer needs.
View Hexwired Recruitment Profile
N/A
$1,000+
2 - 9
London, UK
0.0 (0 Reviews)
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
SYNCRONISING BUSINESS WITH TECHNOLOGY
Synycs Group is a London-based digital strategy and software development consultancy delivering end-to-end IT infrastructure management, search engine optimization, and custom application development services. Founded in 2014 and headquartered in the UK with additional operations across multiple countries, Synycs Group specialises in digital strategy, IT managed services, UX/UI design, and cloud computing solutions tailored to each client's technology goals. The agency's cross-functional team combines cognitive services such as AI and machine learning with practical business consulting, helping organisations streamline IT operations and improve customer experience. Synycs Group supports clients across banking, healthcare, education, manufacturing, and telecom industries, offering services spanning application development, infrastructure management, cybersecurity, and quality assurance. With a global footprint across the UK, India, and Australia, the firm positions itself as a one-stop technology partner for businesses seeking to synchronise digital strategy with scalable software solutions. Companies looking for a dependable digital strategy and SEO-focused development partner will find Synycs Group's broad service portfolio well suited to enterprise and mid-market technology needs.
View Synycs Group Profile
$25-$49/hr
$1,000+
50 - 249
London, UK
0.0 (0 Reviews)
0.0 (0 Reviews)
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
1
SF Score
SF Score is calculated using our SARM methodology to evaluate agency expertise, market presence, and overall credibility. View Ranking Methodology
UK Cyber Security Solutions for Business
Defensity is a London-based cybersecurity company delivering cybersecurity and IT strategy consulting services tailored to small and medium-sized enterprises and startups. As an IASME certification body, Defensity delivers Cyber Essentials and IASME Cyber Assurance certifications through in-house CISSP-certified assessors, alongside virtual security manager services and on-demand cybersecurity support designed to keep security management costs manageable for growing businesses. The company's offerings include virtual CISO support, incident response planning, ISO 27001 controls guidance, vulnerability testing, and managed endpoint detection, providing a comprehensive suite of protection without the overhead of a full-time security team. Defensity's friendly, expert approach focuses on simplifying complex cybersecurity concepts into practical, business-ready solutions that protect against prevalent threats. Businesses seeking accessible, cost-effective cybersecurity and IT strategy consulting will find Defensity's bespoke Business Security Packages and certification expertise a strong fit for building foundational security resilience.
View Defensity Profile
N/A
$1,000+
2 - 9
London, UK
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