How to Choose an AI SEO or GEO Agency in the UK (2026)
Compare agency scope, evidence, crawler checks and reporting before buying AI search optimisation. A practical UK brief with no guaranteed rankings.
Read the guide
Software, apps and AI, built in Manchester
BigBerri is a software house building websites, web and mobile apps, MVPs and AI for UK businesses. Fixed prices, live in weeks, and you own the code.
Book a Free Discovery CallNot sure where to start? Start with the question you have
Plain-English guides to the questions UK businesses ask us most, or ask us directly on a free call.
Where most clients start
One team for the software, the apps and the AI
Pick the problem you have. Every build connects to the systems you already run, rather than adding another one to check.
Answers from your own information, then books or hands over
A chatbot on your website, WhatsApp or app that answers from your pages, policies and services rather than guessing, and does something useful with the conversation.
- Answers from content you have approved, not the open web
- Books, captures the lead or opens a ticket in the system you already use
- Hands anything outside its rules to a person, conversation attached
Ask us anything
Replies straight away
Do you offer same-week installs in Stockport?
Yes, Stockport is in our area and we have two slots left this week. Can I take a name and number to hold one?
Sam, 07700 900123
Lead added to your CRM, team notified
Illustrative example, not a client result.
Well-made software first. AI where it earns its place.
Most of what we build is ordinary, well-engineered software: websites, customer portals, internal tools, mobile apps and the integrations between them. We add AI when it saves someone a step, and we tell you when a simpler tool would do the job. The repository, the hosting and every account sit in your company name from day one, with tests and a README, so another developer could pick it up without us.
your-company / booking-platformOwner: you
- app/Pages and routes
- components/Your interface
- lib/Business rules
- tests/Checked on every change
- README.mdHow to run it without us
All checks passed on the latest change
Built for your sector
- Dental PracticesAI That Answers Every Call and Fills Every Gap in the DiaryLearn more
- Estate AgentsQualify Every Applicant and Book Viewings While You SleepLearn more
- Law FirmsCapture Every Enquiry and Free Your Fee-Earners From AdminLearn more
- Accountancy FirmsAutomate the Chasing, Keying and Reminding So Your Team Can AdviseLearn more
- Trades & Home ServicesAnswer Every Job Call While You Are Up a LadderLearn more
- Clinics & Private HealthcareFill the Diary and Answer Every Patient Without Adding Reception StaffLearn more
- E-commerce & RetailCut Support Tickets, Recover Baskets and Get Found by AI ShoppersLearn more
- All 26 industries we build forSee every sector
Guides for the person deciding whether to hire
Bespoke Software Development in the UK: What Decides the Cost, When Off-the-Shelf Wins, and What to Put in the Contract
A buyer’s guide for UK businesses weighing custom software against an off-the-shelf tool: what actually moves the cost, the three routes compared, who owns the code by law, and the contract clauses to insist on before anyone writes a line.
Read the guide
Zapier vs Custom AI Automation: Which Fits a UK Business?
Zapier prices by the task, and its own documentation is precise about what counts as one and what does not. Worked through against a custom build’s flat running cost.
Read the guideBe the business the AI assistant recommends
Buyers now ask ChatGPT, Perplexity and Google’s AI Overviews who to hire. We structure your site so those answers can find, understand and cite you: schema markup and an llms.txt that describe what you actually do, answer-first pages for the questions buyers ask, and technical fixes so crawlers and AI agents can read every page.
From first call to live, in four steps
No day rates and no open-ended retainers. You know the price and the scope before any build work starts.
- 01
Free discovery call
Thirty minutes, no obligation. We learn where you are losing time or enquiries and tell you honestly whether it is worth building.
- 02
Written scope, fixed price
You get a scope in plain English and one fixed price. If the scope changes later, we re-quote before doing the work, not after.
- 03
Built and tested on your business
We build against your real systems and data, and you see it working before anything goes in front of a customer.
- 04
Live, and yours
It launches on accounts in your company name. We watch the first weeks of real use and fix what falls short.
We run software of our own, too
Two live products with their own users and their own sites. The same team and the same standards go into every client build.
Before You Get In Touch
What you can hold us to
Review our own live products, check our company registrations and read the commitments that shape a project. These give you concrete work and clear terms to discuss before booking a call.
Our own product
Writford
A workspace for UK legal firms connecting cited research, matter records, time recording and billing. The research workflow keeps source checking and professional review with the solicitor.
Explore WritfordOur own product
Let AI Browse
Tools for connecting shopping assistants with storefront product, cart and checkout actions. Its WordPress and storefront integrations show the kind of connected web workflows we build.
Explore Let AI BrowseRead the LetAIBrowse case studyWhat the discovery call actually is
Thirty minutes, free, no obligation and no salesperson. You describe what is costing you time or customers, we ask about the systems involved, and you leave with an honest view of whether this is worth doing. We regularly end that call by saying the tool you already pay for covers it.
You own the result
The code, the repository and the accounts are set up in your company name rather than ours, and they are yours on completion and full payment. Nothing runs on infrastructure we control, so ending the relationship does not end the thing we built.
A fixed price, never a day rate
Every project is quoted as a fixed price with a written scope after the call, so an over-run is our problem rather than yours. If the scope changes, we say so and re-quote before doing the work, not after.
Where your data sits
In the UK or EU, under a data processing agreement, kept only as long as you specify. Any model provider we rely on is named as a sub-processor rather than left implicit, and we will tell you plainly where something you have asked for would put a commitment of yours at risk.
What happens when it goes wrong
Agreed before launch rather than negotiated during an incident: what is covered, how quickly we respond, and what counts as new work. Every build has a defined escalation to a person, because the failure that costs you is the one nobody noticed.
Two things you can check
Big Berri Limited is registered in England and Wales, company number 16562429, and registered with the Information Commissioner's Office under reference ZC119995. Both are public registers. Look us up rather than taking our word for it.