# Marvin Works > For UK accountancy practices. Specialist help that doesn't hand in its notice: AI colleagues for bookkeeping, accounts and tax preparation. You review. You approve. 27 January. Same deadline, different evening. Keep the software you already use: Xero, QuickBooks, Sage or Bright. ## Your new team Good people are hard to find. Harder to keep. - **Gracia**, AI colleague, Accounting Operations Manager: a clear next step for every piece of work. - **Mazal**, AI colleague, Bookkeeper: records prepared. Missing evidence visible. - **Sydney**, AI colleague, Accounts & Tax Preparer: working papers you can follow. - **Abraham**, AI colleague, Accounting Quality Auditor: another view before your decision. Specialist capacity that stays. You review. You approve. ## MrStern: the AI behind your team Gracia, Mazal, Sydney and Abraham all run on MrStern: Marvin Works' own AI. Our own specialist UK Tax/Finance models, grounded in accounting cases and professional context. Not a public chatbot. Your client data never trains MrStern or our models. ## Your clients' data You'd never hand a client's file to a stranger. So why paste it into a public AI chatbot? **Public AI chatbot:** kept on someone else's servers. Under terms you don't control. Your client never agreed to that. **Marvin Works:** - Your files stay in your own storage. - Kept separate from every other practice. - Never used to train MrStern or our models. ICAEW guidance on generative AI: respecting client confidentiality means not loading confidential information into public generative AI tools. Source: [ICAEW](https://www.icaew.com/technical/technology/artificial-intelligence/generative-ai-guide/ethics) ## First stage: only 100 UK practices will be selected A small first group lets us set up and support every practice properly before we open to more. In this first stage, 100 accountancy practices will use Marvin in their day-to-day work and help shape how it develops. Keep Xero, QuickBooks, Sage or Bright. Your files stay in your own storage. You review. You approve. [Apply now](https://marvinworks.com/#apply). Applying does not guarantee a place or an access date. Please do not submit client information or documents. ## Sunday lunch, not Sunday catch-up Add the team that stays. Keep your clients' data yours. ## Company Marvin Works Ltd. Company number 17223314, incorporated in England and Wales. Registered office: 82a James Carter Road, Mildenhall, Bury St. Edmunds, England, IP28 7DE. VAT registration number: GB 522 7701 08. ICO registration reference: ZC175847. - [Company](https://marvinworks.com/company/): the founders, MrStern, investors and funds, company details. - [Privacy](https://marvinworks.com/privacy/): how information sent through this website is used and kept. Xero, QuickBooks, Sage and Bright are trademarks of their respective owners. Marvin Works is not affiliated with, endorsed or sponsored by them.