IT company in London
building software that works.
Mantar Tech LTD is a UK-registered IT company based in London. We design and build custom software — web applications, mobile apps and bespoke platforms — for businesses across the UK. Fixed price. Full code ownership. No lock-in.
What kind of IT company is Mantar Tech?
Not all IT companies do the same thing. Here's exactly what we do — and what we don't.
What we do
- Custom web application development
- iOS and Android mobile app development
- Bespoke software and internal tools
- API design and backend development
- Cloud infrastructure (AWS, Azure, GCP)
- UI/UX design
- Technical consulting and architecture
- MVP development for startups
What we don't do
- Managed IT support / helpdesk
- Hardware procurement or networking
- Software licence reselling (Microsoft, etc.)
- Cybersecurity audits or penetration testing
- Data recovery or IT maintenance contracts
- CCTV, access control or physical IT
We are a software development company — we build digital products from scratch.
IT services we provide in London.
Web App Development
Custom web applications for businesses in London and across the UK. From internal dashboards to customer-facing SaaS platforms. React, Next.js, Vue, Node.js.
Mobile App Development
iOS and Android apps using Swift, Kotlin, React Native and Flutter. From consumer applications to field-service tools used by London businesses.
Custom Software
When standard software doesn't fit your workflow, we build it from scratch. Automation tools, compliance platforms, ERP integrations and multi-tenant systems.
API & Backend
Secure REST and GraphQL APIs. Third-party integrations with Stripe, Xero, Salesforce and more. Node.js, Python, .NET or Go — whichever fits your stack.
Cloud & DevOps
Cloud infrastructure on AWS, Azure or GCP. Docker, Kubernetes, CI/CD pipelines and monitoring. We build and hand over full infrastructure — you own it.
Technical Consulting
Architecture reviews, technical due diligence, build-vs-buy decisions. An independent London-based perspective for better technology choices.
What makes us different from other London IT companies.
Fixed-Price Projects
Every project is quoted at a fixed scope and fixed price. You know the total cost before we start. No open-ended day rates, no scope creep surprises.
100% Code Ownership
All source code, repositories and IP transfer to you on completion. You receive repository access from day one. No dependency on us to run your own software.
UK-Registered
Mantar Tech LTD is registered at Companies House, East Ham, London. UK contracts, UK invoicing, UK legal framework. No offshore complexity.
Full Transparency
Staging environment access throughout development. Weekly updates. You see every build before it goes live. No black boxes.
In-House Engineers
The engineers you meet are the ones who build your product. We don't subcontract. No hand-offs to unknown teams after the sale.
Fast, Lean Delivery
MVPs from 8 weeks. We prioritise the features that matter most so you can launch, validate and iterate without waiting months for everything at once.
How much does a London IT company charge?
Costs vary by project complexity. Here's what different budgets typically get you with a fixed-price IT company in London.
MVP / Tool
£8,000–£20,000
Single-platform app or focused internal tool. Core feature set. 8–12 weeks. Ideal for startups and SMEs validating a product or automating a key workflow.
Business Application
£25,000–£60,000
Custom backend, integrations, multi-role access and designed UI. Suitable for client-facing platforms and complex internal systems. Timeline: 3–5 months.
Enterprise System
£60,000+
Multi-tenant platforms, advanced integrations, compliance requirements and large-scale infrastructure. Complex enterprise software for regulated industries.
Full cost breakdown: How much does software cost in the UK? →
Common questions about hiring an IT company in London.
What does an IT company in London actually do?
It depends on the company. Mantar Tech focuses entirely on software development — custom web apps, mobile apps, APIs and bespoke platforms. We don't do managed IT support, hardware or networking.
How much does an IT company in London charge?
For software development: MVPs from £8,000–£20,000. Business applications £25,000–£60,000. Enterprise systems from £60,000. We quote fixed prices — no hourly billing surprises.
Is Mantar Tech a London-registered company?
Yes. Mantar Tech LTD is registered in England and Wales at Companies House. Our registered office is 182-184 High Street North, East Ham, London E6 2JA.
Do you work with businesses outside London?
Yes — we're remote-first and serve clients across the UK. Manchester, Birmingham, Leeds, Bristol, Edinburgh and beyond. London registration, UK-wide delivery.
Do I own the software you build?
Yes. 100% of code, repositories and IP is yours on delivery. We give you repository access from day one. You are never locked in to us or any platform we use.
How do I start a project with Mantar Tech?
Book a free consultation — no commitment required. We'll discuss your requirements, budget and timeline. You'll receive a fixed-scope quote within a few days of our first call.
More from Mantar Tech.
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Read more → ServiceApp Developer UK
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Read more → GuideHow Much Does Software Cost in the UK?
Full 2026 cost breakdown for web apps, mobile apps and custom software development in the UK.
Read guide →