On demand
£6.95
per hour plus VAT
When the machine is not reserved.
For Accountancy
Client data that never leaves the UK, on a machine no other firm shares
For independent and mid-tier firms, roughly 20-200 staff, whose engagement terms or internationally owned clients restrict where client files may be processed.
This does not replace professional judgement. It does not sign anything. It is not audit software.
01
The problem
Client financial data cannot be sent to US-hosted models under most engagement terms, and firms are increasingly asked to confirm in writing that it has not been. Meanwhile FRS 102 guidance, tax legislation and working paper files are long and highly repetitive - the exact work a large model should be doing, if the files never left the jurisdiction and never sat on a machine another firm could reach. Busy season makes the gap obvious. A practice assurance visit, or a new engagement with data-residency terms, makes it urgent.
02
What you can actually run
What you can actually run is a 70B-class open-weight model held in memory at full precision on a UK-hosted Mac Studio with 512GB of unified memory. You supply current guidance, working papers and the firm's own precedent. The model drafts and queries. A qualified person reviews. The page says this directly: it does not replace professional judgement, and it does not sign. Reserved use is single-tenant. MetalCloud is not ISO 27001 certified and does not hold SOC 2. A DPA is available on request, which is what a first call in this sector will ask for.
03
Named workflows
- Working paper review and query generation Raise queries from the file you supply, for a reviewer to take or discard.
- FRS 102 and tax legislation questions Answered against current guidance the firm supplies, not against an unknown training cut-off.
- Client correspondence from firm precedent Draft letters from how the firm already writes, not from a generic tone.
- Disclosure checklist assembly Assemble a checklist from the source documents you provide.
- Engagement letter and scope drafting Draft from the firm's own letters. A partner still issues.
- Management accounts commentary A first draft of commentary for a human to edit.
04
Why this hardware
This is a capacity machine: 512GB of unified memory on a single tenant. The CPU and GPU share one pool, so a large model and a large document set can sit in memory together at full precision. A 70B-class open-weight model is the named size class this configuration is used for.
It is not sold as a high-throughput service. Apple Silicon does not suit many simultaneous users, and this page makes no claim about tokens per second, response time, or concurrency. The fit is single-tenant, privacy-led, batch-friendly work: overnight processing, long documents, and a model that stays on hardware only your team can reach.
Dedicated monthly use is one customer on one machine. That is the product.
05
Buying one is not currently an option
Apple launched the M3 Ultra Mac Studio in March 2025 advertising up to 512GB of unified memory, and marketed it as able to run models with over 600 billion parameters entirely in memory.
In March 2026, MacRumors, 9to5Mac and Ars Technica reported that Apple withdrew the 512GB configuration. In May 2026, Apple Insider and others reported that the 256GB configuration was withdrawn as well. The M3 Ultra Mac Studio is now sold in a single 96GB configuration.
Secondary-market listings for 512GB units have been reported around $25,000, roughly £19,000-20,000, where they appear at all. Apple has given no public reason and has not said whether the change is permanent. The M5 Ultra Mac Studio has not shipped.
MetalCloud did not originate these facts. They are a matter of public reporting. This page will be rewritten if Apple restores a high-memory configuration.
Currently one 512GB machine. A dedicated monthly customer occupies it in full. Allocation is first-committed.
Correct as of 22 August 2026. Sourced from public reporting, not from MetalCloud.
06
Data handling
The machine is hosted in the UK. On the reserved monthly tier it is single-tenant: your team reaches the endpoint, and another firm does not share the box for that period. Execution is hardware-isolated at the machine.
MetalCloud does not hold SOC 2. ISO 27001 is not certified. A data processing agreement is available on request. Operator access, logging and retention are set out in that agreement and on the technical call, not invented here.
When you stop, you stop. What happens to residual data on disk is a DPA and offboarding question, and we will answer it in writing before you commit.
- Where it sits
- UK-hosted Mac Studio.
- Who reaches it
- Your team, on a reserved booking. Single tenant.
- What is logged
- Set out in the DPA and on the technical call. Not invented here.
- Agreement
- DPA available on request. ISO 27001 is not certified. SOC 2 is not held.
07
Pricing
Two published prices, both plus VAT. On demand is £6.95 per hour. Reserved monthly is £2,995 per month. There is currently one 512GB machine. A reserved monthly customer occupies it in full. Hourly work is offered when the machine is not reserved. Allocation is first-committed.
Reserved
£2,995
per month plus VAT
Occupies the machine for the month.
Reserved monthly is £2,995 plus VAT for the machine. Hourly is £6.95 plus VAT when it is free. Audit trail and evidencing requirements belong in the firm's methodology, not in this product. The professional body position on AI use is the firm's to settle; this page does not speak for any institute. What we can say is that processing stays on UK-hosted, single-tenant hardware, and that a DPA is available on request.
Currently one machine, allocated on a first-committed basis. Neither price includes VAT.
08
What MetalCloud is not
If you need a books product, this is the wrong supplier.
- Not bookkeeping software.
- Does not connect to Xero, Sage or QuickBooks out of the box.
- Not audit software, and not a substitute for audit methodology.
- Does not sign anything.
09
Questions accountancy teams ask
On a UK-hosted machine. Reserved use is single-tenant. A DPA is available on request.
No. A qualified person reviews every output. Nothing is signed by the model.
No. ISO 27001 is not certified. SOC 2 is not held. Those facts are stated so a due-diligence request is not a surprise.
Not out of the box. It is a model endpoint. Integration is possible over an API if you choose to build it.
That processing is UK-hosted and single-tenant on the reserved tier, and that the DPA will say so.
Offboarding is written into the DPA and confirmed before you commit.
Book a 20-minute technical call
If an engagement letter already restricts third-party AI, book a 20-minute technical call. Bring the clause.