Head to head · Updated 9 October 2026

iDeals vs Datasite for UK deals

Matching security profiles; the split is AI tools, an API and a UK head office.

By the DataRooms.uk editorial team · How we score providers

iDealsRanked 2 on our UK list

9.2

Price from: Quote on request
Free trial: Yes
Founded: 2008
Head office: United Kingdom

Read the iDeals review

DatasiteRanked 3 on our UK list

9.0

Price from: Quote on request
Free trial: Not listed
Founded: 1999
Head office: United States

Read the Datasite review

Our call

VerdictiDeals edges it overall, 9.2 to 9.0, on ease of use, value and support. Security and deal tools are level: both list ISO 27001 and SOC 2, single sign-on, redaction, Q&A and a full audit trail. Datasite adds AI tools and a mobile app; iDeals adds an API, a free trial and a UK head office. Both price by quote, so the real contest happens in the two proposals.

These are two of the longest-running rooms on our list, founded in 2008 and 1999. Because their security listings match line for line, a UK buyer of either is choosing on daily use, extras and commercial terms. This page tests them against our UK weighting and four settings: a Takeover Code bid, an AIM admission, an early-stage round and a commercial property sale.

Score duel on our five UK criteria

iDeals is ahead overall, 9.2 to 9.0 out of 10. iDeals wins 3 of the 5 criteria, Datasite wins 0 and 2 are tied. The widest gap is on ease of use, 0.7 points in favour of iDeals, a criterion worth 20% of the overall score.

iDeals and Datasite: score duel on five UK criteria

iDeals 9.2 3 criteria won

vs2 tied

Datasite 9.0 0 criteria won

Security & UK GDPR 30% weight

iDeals 9.6

Datasite 9.6

Level Weighted: 2.88 vs 2.88
Deal tools 25% weight

iDeals 9.5

Datasite 9.5

Level Weighted: 2.38 vs 2.38
Ease of use 20% weight

iDeals 8.5

Datasite 7.8

iDeals by 0.7 Weighted: 1.70 vs 1.56
Value for money 15% weight

iDeals 8.8

Datasite 8.3

iDeals by 0.5 Weighted: 1.32 vs 1.25
Support 10% weight

iDeals 9.7

Datasite 9.3

iDeals by 0.4 Weighted: 0.97 vs 0.93

Widest gap: Ease of use, 0.7 points to iDeals. Overall, iDeals by 0.2.

datarooms.ukEditorial scores, not user reviews

Editorial scores out of 10 from our UK-weighted model. Weighted points are the score times the criterion weight; they add up to the overall score. Source: our facts database.

Two criteria tie. iDeals' lead comes from ease of use, value and support, each worth less than security, so the overall gap stays small. Treat this as a close call that your own deal requirements should settle.

What only one of them has

Of the 12 features we track, the two share 8. Only iDeals lists API access. Only Datasite lists mobile app and AI tools. Neither lists e-signature.

Only iDeals

API access

Only Datasite

Mobile app
AI tools

Both

Q&A workflow
Full audit trail
Dynamic watermarks
Redaction
Single sign-on
Two-factor login
Bulk upload
Document rights control

Neither lists

E-signature

Datasite's AI tools and mobile app are the visible extras. iDeals' API matters if your firm wants to connect the room to a document management or reporting system. Neither lists e-signature, so signing happens elsewhere with either.

Cost in pounds, with and without VAT

Neither publishes a list price, so the calculator shows a typical market range for an enterprise project quote on both sides. Use it as a sense check. Ask both for a sterling quote on the same months, pages and users, then compare the extension and archive terms line by line.

Months the room stays open 6 11224 Pages in the room 10,000 50075,000150,000 Add VAT at 20%

VAT: UK-registered suppliers add it to the invoice; for suppliers based abroad, UK businesses usually account for it under the reverse charge. Ask your accountant how it applies to you.

Indicative cost for 6 months, excluding VAT

iDeals

£4,000 to £12,000 Typical market range for a project quote of this size iDeals prices by quote; this is not a price from iDeals

Datasite

£4,000 to £12,000 Typical market range for a project quote of this size Datasite prices by quote; this is not a price from Datasite

Indicative only, confirm with the provider. Published dollar prices converted at $1 = £0.75; higher tiers, storage, add-ons and the exchange rate on the invoice date change the real figure. Quote ranges follow our deal-type budget calculator.

UK GDPR and hosting: what to ask

Both list GDPR among their certifications and frameworks in our data, alongside ISO 27001 and SOC 2. iDeals lists a UK head office and Datasite a US one. Neither fact settles hosting, so ask both for the region your room will use and the sub-processors involved.

Check	iDeals	Datasite
Head office	United Kingdom	United States
Certifications listed	ISO 27001, SOC 2	ISO 27001, SOC 2
Two-factor login	Yes	Yes
Single sign-on	Yes	Yes
Full audit trail	Yes	Yes
Built-in redaction	Yes	Yes
Hosting region for a UK room	Ask the provider	Ask the provider
Data processing agreement	Ask the provider	Ask the provider
Sub-processor list	Ask the provider	Ask the provider
Transfer route if data leaves the UK	Ask the provider	Ask the provider
Where AI processing happens	No AI tools listed	Ask the provider

Facts as listed in our provider database. "Ask the provider" means we hold no verified answer; get it in writing for your room.

Where will a UK room be hosted?Ask for the region in writing and whether it can be fixed in the contract. Our data does not record hosting, so treat any answer from a sales call as provisional until it is in the order form.
Who is the processor, and under which agreement?Get the data processing agreement before documents go in. Check it names the contracting entity, the security measures and how the provider helps you answer subject access requests.
Which sub-processors touch the documents?Hosting, support, email delivery and analytics vendors all count. Ask for the list and how you are told about changes during the deal.
Can anyone outside the UK see the files?Datasite lists the United States as head office. Support access from abroad is a restricted transfer, so ask which safeguard covers it: UK adequacy regulations, the UK International Data Transfer Agreement or the UK Addendum to the EU standard contractual clauses.
What happens to documents in the AI tools?Datasite lists AI tools. Ask where that processing runs, which model provider is involved and whether your content is used for training. A DPIA may be needed if personal data goes through it.
What happens to the room at completion?Agree the archive format, how long read-only access lasts and when the provider deletes everything, with a certificate of deletion if your retention policy needs one.

How each copes with four UK deals

Takeover Code bid

Both are credible for a Code bid. Datasite's mobile app helps principals follow a fast-moving offer period. iDeals' free trial lets a target's company secretary rehearse, before any announcement, how access would be mirrored for a second bidder under the equal information rule.

AIM admission

AIM work rewards a room that advisers find easy, because reporting accountants and lawyers live in it for months; iDeals scores higher on ease of use. Datasite's AI tools may cut reading time on verification, which is worth testing on a sample of your own papers.

SEIS or EIS round

Neither is an obvious fit for a SEIS or EIS raise, since both quote per project. If your investors or accelerator already use one of them, iDeals' free trial at least lets you test it before you are asked to pay.

Commercial property sale

Both list redaction, which helps with tenant data. Datasite's AI tools are the edge for buyers working through hundreds of leases. If you want to automate uploads from a property management system, ask iDeals what its API supports. Either way, confirm that bulk uploads keep the folder index intact.

More deal types, each with a UK shortlist, on our solutions page.

Which to choose

Choose iDeals if

You want to try the room through a free trial before signing.
An API is needed to connect the room to your own systems.
A UK head office matters to the client or its board.

Choose Datasite if

AI tools are on the requirements list.
Principals want a mobile app.
The sell-side adviser already runs its deals on Datasite.

Still unsure? Our data room quiz matches a shortlist to your deal type, and the UK ranking puts both in the context of all 18 providers we track. For a longer read on this pair, see iDeals vs Datasite for a UK mid-market sale.

iDeals vs Datasite: questions

What will iDeals and Datasite cost in pounds?

Both price by quote, so the figure depends on the months, pages and users in your project. For a sense check, our calculator above shows a typical market range for an enterprise project quote of your size. Ask each for a sterling quote that states VAT treatment and the rate for extra months.

Which features does only one of them have?

Only iDeals lists API access. Only Datasite lists mobile app and AI tools. Both list Q&A workflow, full audit trail, dynamic watermarks, redaction and single sign-on and more.

Can I try iDeals and Datasite before paying?

iDeals: free trial. Datasite: no free trial listed. Where there is no free trial, ask for a guided demonstration using a copy of your own folder index rather than the provider's sample room.

Which is easier for outside advisers?

On our ease-of-use criterion iDeals scores higher than Datasite. Ask both for a guest walkthrough and watch how a buy-side lawyer finds a document and raises a question.

Do iDeals and Datasite store data in the UK?

Our facts database does not record hosting regions, so ask each provider which region your room will use and request it in the contract. iDeals lists a UK head office and Datasite a US head office, but head office is not the same as hosting.

Is one better for regulated UK sellers?

Both list ISO 27001, SOC 2, single sign-on and redaction, which covers most regulated sellers' security checklists. The choice then turns on AI tools, an API and the commercial terms.

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