Chatbots That Give Wrong or Made-Up Answers
A bot that invents a returns policy is worse than no bot. RAG chatbots only answer from approved content and say when they do not know.
RAG DEVELOPMENT · UK
Custom RAG Chatbots in the UK
A RAG chatbot only answers from the content you give it: your website, help articles, product sheets and policies. Every answer can link to its source, so customers and staff can trust it. We build them for businesses in Milton Keynes, Bletchley, Liverpool and across the UK.
- UK GDPR compliant
- Works with your tools
- You own the code
REAL CLIENT RESULTS
Trusted by UK Businesses Using Our Custom RAG Chatbots
Numbers from projects we have delivered for UK businesses, from recruitment and accountancy to solar energy and field service software.
58%Less screening timeRecruitment
97%Faster lead responseSolar energy
72%Less time chasing recordsAccountancy
8 wksFrom notes to launchField service software
Areas we cover
Based in Milton Keynes, building AI for businesses nearby in Bletchley, Wolverton, Newport Pagnell, Stony Stratford, Buckingham, Bedford, Northampton and Olney, and across the UK in London, Birmingham, Manchester, Leeds, Liverpool and Lichfield.
IN PLAIN ENGLISH
What Are Custom RAG Chatbots – and What We Do Differently
A custom RAG chatbot combines a chat window with a search of your own content, so the AI answers from your facts instead of the open internet. Many chatbot builders let you upload a few files and hope. We test the bot against hundreds of real questions, set clear rules for what it should not answer and hand over to a person when it is not sure.
SOUND FAMILIAR?
Business Problems Our Custom RAG Chatbots Solve
Scripted Bots That Frustrate Customers
Button-based bots break the moment someone asks something unexpected. A RAG chatbot understands normal questions in normal language.
Help Centre Articles Nobody Reads
You wrote the answers, but customers still email. A chatbot brings the right article to them in the conversation.
Internal Questions Interrupting Senior Staff
The same policy and process questions land on the same people every week. An internal RAG chatbot answers them instead.
WHAT WE BUILD
Our Custom RAG Chatbots Services
Customer-Facing RAG Chatbots
Website and app chatbots that answer from your help centre, product data and policies.
Internal Staff Chatbots
Chatbots in Teams or Slack that answer HR, IT and process questions from your handbook.
Source Citations in Every Answer
Links to the exact document or page behind each answer, so users can check it.
Content Ingestion & Sync
Your website, PDFs and help desk kept in sync, so the bot always uses the latest version.
Guardrails & Off-Topic Handling
Clear limits on what the bot will discuss, with polite answers for anything outside them.
Human Hand-Off
Conversations passed to your team with a summary when the bot is unsure or the customer asks.
Multi-Language Support
Answers in your customers’ language from content written in English.
Conversation Analytics
Reports on top questions, unanswered questions and content gaps to fix.
Find Out What AI Can Automate in Your Business
A free audit shows the tasks worth automating first, with the hours each one should save.
WHO USES IT
RAG Chatbot Use Cases by Department
RAG Chatbot for Sales Teams
Sales staff ask for prices, specs or contract terms and get an answer with the source document linked, in seconds.
RAG Chatbot for Marketing Teams
Marketers check brand guidelines, past campaigns and product facts before they write, so copy stays accurate.
RAG Chatbot for Customer Support
Agents and customers get answers drawn from your real help centre and policies, with links back to each source.
RAG Chatbot for Operations & Admin
Staff find the right procedure, form or safety note without scrolling through shared drives or asking a colleague.
RAG Chatbot for Finance & Reporting
Finance teams search contracts, invoices and policy documents in plain English instead of opening folder after folder.
RAG Chatbot for HR & Recruitment
New starters ask the handbook questions directly and get the current policy, not the version from three years ago.
CASE STUDIES
Custom RAG Chatbots Results: Client Case Studies
Real projects, real numbers. Client names are kept private where they asked us to.
Recruitment: 58% Less CV Screening Time with an AI Platform
58%Less screening time
92%CVs imported automatically
A specialist UK recruitment agency now has CVs pulled in, ranked and explained by AI, so recruiters spend their day on calls instead of reading.
Read the case studyAccountancy: 72% Less Time Chasing Client Records
72%Less time chasing records
29%Faster year-end turnaround
A UK accountancy practice replaced email chasing with a portal that sends its own reminders and collects documents in one place.
Read the case studySolar Energy: 97% Faster Lead Response Through Automation
97%Faster lead response
31%More surveys booked
A UK solar installer connected its ads, website and CRM, so every enquiry gets a reply in minutes and customers book their own surveys.
Read the case studyGet Similar Results for Your Business
Tell us which job takes your team the most time. We will show you what can be automated.
HOW WE WORK
How Our Custom RAG Chatbots Process Works
AI Opportunity Audit
We review the documents you want the AI to use: where they live, how often they change and who is allowed to see what.
Roadmap & ROI Forecast
We agree the questions the system must answer well, the accuracy target and the hosting set-up, with a clear cost.
Build & Integrate
We prepare and index your content, build the retrieval pipeline and connect it to the chat or search screen your team will use.
Test, Train Your Team & Launch
We test against a set of real questions with known answers, fix weak spots, then train your team and go live.
Monitor, Optimise & Scale
We watch which questions fail, add missing content, re-index new documents and keep answer quality measured over time.
TECHNOLOGY
AI Models & Platforms We Work With
We are not tied to one vendor. We choose on accuracy, cost and where your data needs to live.
AI Models (OpenAI GPT, Claude, Gemini, Llama)
Chosen for answer quality and cost, with private hosting options when documents must stay in the UK or EU.
RAG Frameworks & Vector Databases
LangChain, LlamaIndex, Pinecone, Weaviate, Qdrant, pgvector and Azure AI Search, chosen to suit your data size.
Document Sources & Business Tools
SharePoint, Google Drive, Confluence, Notion, Zendesk, websites, PDFs and databases, kept in sync automatically.
WHY CODECRACKERS
Why UK Businesses Choose Us for Custom RAG Chatbots
Custom-Built AI, Not Expensive Off-the-Shelf Subscriptions
Your custom RAG chatbots is built for your processes and you own it. No per-seat licence that grows every time you hire.
Works Inside Your Existing Tools
We connect to the CRM, inbox, help desk and files your team already uses, so nobody has to learn a new system to get the benefit.
UK GDPR-Compliant AI Systems
Data stays in UK or EU hosting where needed, access is limited to what each part needs, and we document how personal data is handled.
ROI-First Approach with Measurable Results
Before we build, we agree what success looks like in hours saved, response time or revenue, and we report against it every month.
PRICING
Custom RAG Chatbots Packages & Pricing
Clear starting prices. Every project gets a fixed quote after the free audit, before any work begins.
Free Custom RAG Chatbots Audit
A 45-minute call and a short written report: where custom RAG chatbots would help, what it would cost and the likely payback.
Book my free auditMost popular
90-Day RAG Chatbot Build Package – From £5,000
Audit, roadmap, build, testing, training and launch of your first solution, with a fixed price agreed before we start.
Get a quoteMonthly Custom RAG Chatbots Retainer – From £450/month
Monitoring, improvements, new features and support every month, with a report on usage, accuracy and time saved.
Get a quoteBook Your Free Audit
45 minutes, no obligation. You keep the report either way.
INDUSTRIES
Industries We Build RAG Chatbot For
Sectors where we already have live client work.
- RecruitmentCV screening, candidate ranking and shortlists.
- Solar and renewable energyLead capture, instant replies and survey booking.
- Accountancy and financeDocument collection, reminders and client portals.
- Trades and field serviceScheduling, quotes, invoices and job admin.
- Ecommerce and retailProduct data, customer queries and order updates.
- Health and wellnessBooking questions, product advice and follow-ups.
CLIENT REVIEWS
What Our Clients Say About Our Custom RAG Chatbots
“Our recruiters used to spend most of the day downloading and reading CVs. Now the platform pulls them in, ranks them and explains why, and we just make the calls.”
“We were losing good leads simply because we couldn’t reply fast enough. CodeCrackers connected our ads, website and CRM so every enquiry gets an answer in minutes.”
“Clients upload everything in one place, reminders go out on their own, and we can finally see every deadline coming.”
“I knew exactly what tradespeople needed but had no idea how to build it. CodeCrackers turned my notes into Vantro, and we launched in eight weeks.”
FAQs
Custom RAG Chatbots FAQs
FREE AUDIT
Ready to Put AI to Work? Book Your Free Custom RAG Chatbots Audit
Tell us about your business and the work that eats your team’s time. We will reply within one working day with a time for your free audit.
- A list of tasks worth automating
- Expected hours saved and payback
- A fixed quote, no obligation
Book your free audit
Four quick details. No obligation.