Terms of service
Last updated 6 November 2026.
1. Who we are
AssayBook is provided by Signet Secure Ltd, a company registered in England and Wales, company number 17268258. Our registered office is the address shown on the Companies House register. Contact us at monk@signet-secure.co.uk or 020 3355 4994.
2. Business use only
AssayBook is for businesses that buy, sell or refine precious metals. By starting a trial or a subscription you confirm that you are acting for a business, not as a consumer.
3. Your desk
- A desk is one AssayBook book for one business, used by up to 10 people.
- Your desk stays closed until Stripe confirms the free trial, and then it opens. It is not opened by creating an account.
- We may decline to open a desk, or close one that breaks these terms.
- Keep passwords private. You are responsible for what the people you add do on your desk.
4. Free trial, price and payment
- Free trial: 30 days. Your card is taken at the start through Stripe. Nothing is charged until the trial ends. Cancel before then and you pay nothing. The desk opens only after Stripe confirms the trial.
- Price: £347 a month per desk.
- Stripe takes payment monthly in advance. We never see or store your card number.
- If a payment fails, we may lock the desk until the payment is made. Your book is kept, and the desk opens again once the payment is made.
- We may extend a free trial at our discretion. The first payment then moves to the new end of the trial.
- No VAT is currently charged. If we register for VAT, we will tell you at least 30 days before VAT is added.
- We may change the price for future months by giving you at least 30 days' notice by email.
5. Cancelling
- Cancel any time on the desk: open Subscription and users, then Cancel subscription. You can also email us, and we cancel within one working day.
- Cancelling during the free trial means you pay nothing, and the desk stays open until the trial ends.
- Cancelling after the trial stops the next payment. You keep access until the end of the month you have paid for. We do not refund part months.
- Until the end of that period you can change your mind, on the desk or by email.
- Once a subscription has ended, we start a new one on the card Stripe holds only when you ask us to in writing. You can also start one yourself on the desk.
- To change your card or get a copy of an invoice, open Subscription and users on the desk, or email us.
- Download your spreadsheet and full backup (Book, then Your data) before your desk closes.
6. Your data
- Everything you enter remains yours.
- You can download it at any time and ask us to delete it. We delete it within 30 days of your written request.
- When a subscription ends, we keep the book for 90 days in case you return, then delete it, unless you ask us to delete it sooner.
- If you record details of the people you buy from, you are responsible for that personal data. We process it only to run AssayBook for you, under part 10.
7. The figures
- AssayBook works out its figures from what you enter and from your term sheets, using fixed arithmetic. No AI is used in any calculation.
- Gold prices come from third-party feeds and may be delayed or wrong. Check the price before you pay a seller.
- The figures help you check purchases and settlements. They are not legal, tax or financial advice. Check any shortfall against your own contract before you raise it with a refiner.
8. Our responsibility to you
- We provide AssayBook with reasonable skill and care.
- We are not liable for loss of profit, loss of business, loss of data or any indirect loss.
- Our total liability in any 12 months is limited to the fees you paid us in those 12 months.
- Nothing in these terms limits any liability that the law does not allow us to limit, such as for death or personal injury caused by negligence, or for fraud.
9. Suspending or closing a desk
We may suspend or close a desk if fees are unpaid, or if AssayBook is used unlawfully or to harm others. Where we reasonably can, we will tell you first.
10. Data processing terms
When you enter personal data about your sellers or staff, you are the controller and we are your processor under UK data protection law. We will:
- process it only on your instructions, which are these terms and the way you use AssayBook;
- keep it confidential and protect it with appropriate security;
- use other providers only for hosting, the database, payments and email, and tell you before we add or change one;
- help you respond to requests from the people concerned, and tell you without undue delay about any personal data breach;
- delete it, or give you a copy, when the service ends.
11. Changes to these terms
We may update these terms. We will email you at least 30 days before a change that affects you takes effect.
12. Law
These terms are governed by the law of England and Wales, and the courts of England and Wales have jurisdiction.
Signet Secure Ltd
Company number 17268258
Domenico Monk, Founder and Director
assaybook.co.uk and assaybook.com
020 3355 4994
monk@signet-secure.co.uk