Resources
Guides on how data rooms work in UK transactions, what they cost and how to run a clean due diligence process.
These guides are written for the people who actually build and run data rooms in UK deals: founders and finance directors preparing a sale or a round, and the solicitors, accountants and corporate finance advisers who work alongside them. They cover UK rules and habits, from the disclosure letter and Companies House filings to UK GDPR and VAT on the invoice.
There are 8 guides so far, grouped by subject below. New to data rooms? Start with the six steps in the next section, then dip into the group that matches your deal.
Start here: choosing your first data room
A short path from "what is a data room" to a room that is ready for buyers or investors.
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Learn what a data room does
Understand the job a data room does in a UK deal and why email and shared drives fall short once buyers arrive.
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Set a budget in pounds
Work out how long the room will stay open and how many people need access, then price the whole deal rather than the first month.
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Check UK GDPR and hosting
Decide what personal data the room will hold, where it will be stored and which safeguards apply if it leaves the UK.
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Shortlist two or three providers
Compare scores, certifications and pricing models, then take a free trial where one is offered and test the Q&A with a real question.
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Prepare and index your documents
Pull the statutory books and Companies House filings, reconcile them, and build an index the buyer and your solicitors can both follow.
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Run Q&A and archive at completion
Route enquiries to the right person, keep answers consistent with the disclosure letter and export a complete archive when the deal completes.
Data room basics
What a virtual data room is, where it sits in a UK deal and how it differs from the file sharing you already use.
Running a data room
Practical set-up and housekeeping: the documents to gather, how to index them and how to keep the room in order until completion.
Costs and budgeting
What rooms cost in pounds, how quotes are built, who usually pays and how VAT works on the invoice.
Security and UK GDPR
Sharing personal data lawfully during diligence, hosting outside the UK and what certifications do and do not prove.
UK deal types
How the room works in specific UK transactions, from SEIS rounds and AIM admissions to takeovers under the Code.
Provider comparisons
Head-to-head comparisons and buying guides that weigh named providers against UK requirements.
Key data room terms in plain English
Words you will meet in UK deal documents and data room settings, explained briefly.
- Disclosure letter
- The seller's letter that qualifies the warranties in a UK share or asset purchase agreement. Documents placed in the data room are often treated as disclosed, so the room index usually ends up attached to it.
- Due diligence enquiries
- The buyer's written questions about the business. In a data room they run through a Q&A module so each question has an owner, an answer and a date.
- Dynamic watermark
- A label added to each page as it is viewed or printed, usually showing the viewer's name or email and the time, which discourages leaks and helps trace them.
- Redaction
- Permanently removing names, salaries or other sensitive details from a document before outside parties see it, rather than covering them with a box that can be lifted.
- Audit trail
- The room's record of who opened, downloaded or printed each document and when. Useful evidence if a buyer later claims it never saw something.
- Data processing agreement
- The contract UK GDPR requires between you, as controller, and the data room provider, as processor, setting out how the provider may handle personal data in the room.
- Clean team
- A small group on the buyer's side, often outside advisers, allowed to see competitively sensitive material that the wider deal team cannot.
- Completion bible
- The final, indexed set of signed deal documents and data room contents kept by each side after completion, now usually delivered on an encrypted drive or as a download.
About these resources
Who are these guides written for?
Owners and finance directors preparing a sale or fundraise, and the solicitors, accountants and corporate finance advisers who run data rooms for them. Each guide is written for UK law and practice.
How often are new guides published?
We add guides regularly and update existing ones when rules, prices or providers change. Each guide shows its publication date, and updated guides show when they were last reviewed.
Are the guides legal or tax advice?
No. They explain how data rooms fit into UK transactions and what to ask. For your own deal, take advice from a solicitor or accountant who knows the facts.
Where should a first-time buyer of a data room start?
Follow the start-here steps on this page: learn the basics, set a budget, check UK GDPR and hosting, then shortlist providers and test them with a free trial before you upload anything sensitive.
Do the guides recommend particular providers?
Comparison guides weigh named providers against UK requirements. Most other guides are provider-neutral and point to our reviews and solution pages when a choice of provider matters.