BuildingWeb
We learn your workflow, then build custom-coded websites, web applications, and business platforms from scratch.
BUILTFORBUSINESS.MADETOLAST.
We build technology to innovate industries.Onmain builds what your brand needs to grow.
Custom websites and systems for UK businesses.
Annemie Bester - Stuck in London with major software issues, Andrei collected my laptop promptly from my...
Nino M - Andrei, impeccable repair. Very professional and quick turnaround. Would highly recomme...
James T - Onmain built our business website from scratch. Clean design, fast loading, and they ex...
Sarah K - Excellent web development service. Our booking system works flawlessly and the team was...
Michael R - Professional, knowledgeable, and efficient. Fixed my laptop issues quickly and gave hon...
Priya S - Our new website went live in under two weeks. Modern stack, mobile-friendly, and we own...
Annemie Bester - Stuck in London with major software issues, Andrei collected my laptop promptly from my...
Nino M - Andrei, impeccable repair. Very professional and quick turnaround. Would highly recomme...
James T - Onmain built our business website from scratch. Clean design, fast loading, and they ex...
Sarah K - Excellent web development service. Our booking system works flawlessly and the team was...
Michael R - Professional, knowledgeable, and efficient. Fixed my laptop issues quickly and gave hon...
Priya S - Our new website went live in under two weeks. Modern stack, mobile-friendly, and we own...
Refer us to a business that needsa website and win a£50 gift card
Unlimited referrals, win unlimited gift cards
The business needs to put down a deposit for you to win the gift card
Website packages
Our packages offer smart websites with care towards your finances
Split the bill in 2 or 3 payments.
Build onceown it forever
We build it for you. Zero Wix setup, zero DIY
Launch package
- £80 paid now
- £80 next month
- £160 total
Get online without touching Wix
- Up to 5 pages
- Header, footer, and pricing section
- Contact form
- Mobile responsive layout
You own it. No forever platform subscription
Growth package
- £125 now
- £125 in month two
- £125 in month three
- £375 total
Looks professional, works for leads
- Everything in Launch
- Up to 10 pages
- Custom testimonials section
- Advanced animations
Growththree payments
Pay half now, the rest in 1 month. Or split between 3 months
Business package
- £250 now
- £250 in month two
- £250 in month three
- £750 total
Built for customers, not just presence
- Everything in Growth
- Booking and enquiry workflows
- Stronger branding and layout polish
- CMS for self-editing later
Custom package
- 3 split payments
- £900+ total
Scale beyond packages
- Everything in Business
- Custom workflows and integrations
- Multi-page platforms and dashboards
- CMS tailored to your operations
Choose a plan in the cards below.
Website packages
Launch
Get online without touching Wix
£80
£80
paid now
next month
- Up to 5 pages
- Header, footer, and pricing section
- Contact form
- Mobile responsive layout
- Basic SEO (titles, meta, sitemap)
- Image gallery and review section
Growth
Looks professional, works for leads
£125
£125
£125
now
inAugust
inSeptember
- Everything in Launch
- Up to 10 pages
- Custom testimonials section
- Advanced animations
- Google Maps embed
- Blog or news section
Business
Built for customers, not just presence
£250
£250
£250
now
inAugust
inSeptember
- Everything in Growth
- Booking and enquiry workflows
- Stronger branding and layout polish
- CMS for self-editing later
- Analytics and conversion tracking
- Integrations (Calendly, WhatsApp, CRM)
Custom
Scale beyond packages
3 split payments
- Everything in Business
- Custom workflows and integrations
- Multi-page platforms and dashboards
- CMS tailored to your operations
- Performance and SEO optimisation
- Dedicated scoping and delivery plan
Prices shown are total project costs in GBP. Split payments are available on selected packages. After your plan is paid in full, you own the website. Ongoing costs are typically limited to your domain (~£10/year) and hosting if applicable.
Website FAQ
Common questions about custom websites from Onmain Systems in London.
- How much does a custom website cost?
- Custom websites and business platforms start from £200. Final pricing depends on pages, features, and integrations. We confirm a clear package before work begins.
- Do I own the website?
- Yes. You own the code and the site. There is no forever platform lock-in or monthly builder subscription required to keep your website online.
- How long does a build take?
- Most brochure and booking sites launch in a few weeks once content and feedback are ready. Larger systems take longer. We share a timeline with your quote.
- What technology do you use?
- We build with modern web standards, typically Next.js and TypeScript, so your site is fast, secure, and easy to maintain or extend later.
MainSearch AI
From inspirationto connection
A new way to find the business you need - AI-powered to connect clients with UK service providers.
Starting with accurate pricing quotations for Onmain Systems.
