Assurance
How we look after your data and systems.
What your procurement, security and compliance teams usually want to know before working with us. If you need something that isn’t covered here, ask, and we will answer it in writing.
The company
Who you are contracting with.
- Legal name
- CacheStack Ltd
- Company number
- 17179570
- Registered in
- England and Wales
- Registered office
- 167-169 Great Portland Street, 5th Floor, London, W1W 5PF
- ICO registration
- ZC221322Check the ICO register
Insurance
Covered, and happy to show it.
Certificates of insurance are available on request.
Professional indemnity
£1,000,000
Aggregate limit, including costs.
Insurer: Hiscox
Cyber and data
£100,000
Cyber and data insurance.
Insurer: Hiscox
Public and products liability
£2,000,000
Each and every claim or loss, excluding defence costs and representation costs.
Insurer: Hiscox
How we build
Security and data, by default.
How the systems we deliver handle sign-in, data and AI, as standard rather than as an add-on.
Security tested before it reaches you
Every platform we deliver is security tested, so that what goes live is as secure as we can make it. Testing is part of delivery, not an optional extra.
Sign-in that fits your infrastructure
Platforms we build aim to use your existing Microsoft Entra ID and Microsoft 365 sign-in, so access is managed in the directory you already run. Where that isn’t an option, we build secure sign-in with multi-factor authentication.
Your data never trains AI
Model training is disabled and zero data retention is enabled across every AI integration we build, so what your people put into a system is not stored by the AI provider or used to train its models.
Hosting chosen per project
Client data is typically hosted in the UK. Some projects use EU or US services where the design calls for them, and the hosting for each project is set out as part of its technical design.
Data minimised by default
We store what a system needs and nothing more. Our own AI phone line, for example, holds a call’s transcript in memory only for the length of the call and stores none by default.
Designed to fail safely
Limits, cost controls and fallbacks are part of the build. Our phone line runs behind an admission gate, in-call limits and a daily budget cut-off, and hands over to a human number on its own if its AI stack is ever down.
AI that shows its sources
Where a system uses AI to answer questions or draft content, we make it traceable: answers cite the page they came from, and AI-drafted material is marked as such so people know what to check.
Sub-processors
The services we build on.
Where applicable. Which of these a project uses depends on its design, and the ones it relies on are set out as part of that design.
- Microsoft AzureCloud hosting, AI services and identity
- VercelWeb application hosting and deployment
- SupabaseDatabases, authentication and file storage
- OpenAIAI models
- OpenRouterAccess to AI models from several providers
- GitHubSource code hosting and version control
- StripePayments, where a project takes them
Working terms
How billing and ownership work.
- Billing
- A day rate for the time the work takes. Published figures are estimates based on comparable projects; the rate itself is shared once project discussions begin.
- Invoicing
- Every 7 to 14 days, in step with the work.
- Payment terms
- 14 days.
- Intellectual property
- Transfers to you on project completion, once all invoices are settled. Pre-existing CacheStack tools and third-party components remain subject to separate ownership and licensing arrangements.
- Handover
- Your choice at the end of a project: we hand over the codebase in a private Git repository, with documentation, or we carry on managing and improving the platform for you on an ongoing retainer.
- Third-party costs
- Hosting and AI usage passed through at cost with no mark-up, either re-invoiced by us or on accounts in your own name.
For procurement
Send us your questionnaire.
If your organisation has its own supplier or security questionnaire, send it over and we will work through it with you.
Documents
- Certificates of insuranceAvailable on request
Get started
Ready to discuss your project?
Book a free 30-minute call. We will ask the right questions, give you an honest assessment, and explain exactly how we would approach your project.