Privacy notice

Last updated 8 October 2026

This explains what personal data DECIDE99 LTD holds, where it came from, why we have it, how long we keep it, and how to make us stop.

Who we are

DECIDE99 LTD is the data controller. We are a bespoke software studio registered in England and Wales.

Company	DECIDE99 LTD
Company number	17239637
Registered office	91 West Drayton Road, Uxbridge, England, UB8 3LE
Contact	thanushen@decide99.com

If we emailed you and you were not expecting it

We send a small number of business emails each day to people whose companies look like a fit for what we build. We did not buy your details from a list broker. Here is exactly where they came from:

Your name and role — from the Companies House public register of company officers, or from your company's own website.
Your company — from the Companies House register: name, number, registered address, SIC code, size classification and filing status.
What your company does — from your public website.
Your work email address — either published on your company's website, or worked out from your employer's visible address format and then checked for deliverability. We never guess at a personal address.

We do not use tracking pixels and we do not rewrite links to see whether you clicked. If you want it to stop, use the unsubscribe link in the email or email us — either one adds you to a permanent suppression list, and we action it within two working days.

What we hold, and why

People we contact about our services

Data	Name, job title, business email address, employer, and our own notes on why the company looked relevant
Lawful basis	Legitimate interests — finding businesses that may need bespoke software. We have carried out and documented a legitimate interests assessment, which we will share on request.
Keep for	12 months from last contact, then deleted. Suppression records are kept indefinitely, because the only way to honour "never contact me again" is to remember that you said it.

Clients and enquiries

Data	Name, contact details, correspondence, project records, invoices and payment records
Lawful basis	Contract for delivering the work, and legal obligation for accounting records
Keep for	Six years after the end of the relevant financial year, as required by the Companies Act 2006

Visitors to this website

Data	Standard server and CDN request logs, including IP address
Lawful basis	Legitimate interests — keeping the site available and secure
Keep for	90 days

This site sets no advertising or analytics cookies.

Who else sees it

We keep the number of processors deliberately small, and we do not sell or share personal data for anyone else's marketing.

Amazon Web Services	Hosting, storage and AI inference. Inference uses EU-resident Bedrock profiles, so the content of our processing stays in the EU.
Google Workspace	Our email.
An email verification provider	Checks whether an address is deliverable before we send, so we do not mail dead addresses.
Atlassian	Our internal issue tracking.

Your rights

Under UK GDPR you can ask us to give you a copy of what we hold about you, correct it, delete it, restrict what we do with it, or send it to you in a portable form. You can also object to our use of legitimate interests at any time — and where that use is direct marketing, we must stop, with no balancing test and no questions asked.

Email thanushen@decide99.com and we will respond within one month. There is no charge.

If you are unhappy with how we have handled it you can complain to the Information Commissioner's Office at ico.org.uk/make-a-complaint or on 0303 123 1113. We would rather you told us first, but you do not have to.

Changes

If we change how we use personal data we will update this page and change the date at the top.