Privacy notice
Last updated: 5 November 2026
The short version. We only collect what we need to answer your enquiry, assess your home and, if you go ahead, install and support your heating controls. We never sell your information. If you send us your gas statements, we use them only to prepare your report and delete them within 90 days of sending it. You can ask us to see, correct or delete your information at any time by emailing hello@zonewise.co.uk.
Who we are
This website and the ZoneWise service are run by Zonewise Ltd, a company registered in Scotland (company number SC884038), registered office Clyde Offices, 48 West George Street, Glasgow, G2 1BP. Zonewise Ltd is the “controller” of your personal information: we decide how it is used and we are responsible for looking after it. We are registered with the Information Commissioner’s Office (ICO) under registration number CSN6728872.
Questions about this notice or your information (ICO registration number CSN6728872): hello@zonewise.co.uk.
What we collect and why
| When | What we collect | Why, and our lawful basis |
|---|---|---|
| Home heating self-assessment | Your answers (gas use or bill, property type, rooms, when you’re home), name, email, postcode and, if you give it, phone number. | To send your summary and contact you about a home survey. Basis: steps you have asked us to take before a possible contract. |
| Gas statements you upload | Your statements, which include your name, address, supplier account details, meter readings, gas use and charges. | Only to prepare your gas analysis report. Basis: your consent, which you give by ticking the box when you upload. You can withdraw it at any time and we will delete the statements. |
| Gas figures read on your device (self-assessment) | If you choose your Octopus gas statements on the self-assessment form, your browser reads them on your own device and adds only the gas figures to your request: statement dates, kWh used, unit rates, standing charge, totals and whether readings were estimated. No name, address, account number, meter number or file name is included, and the PDFs are not uploaded. | To prepare your summary and survey. Basis: your consent, which you give by ticking the box before you send your request. You can withdraw it at any time and we will delete the figures. |
| Contact form or email | Name, email, postcode, phone (optional) and your message. | To reply to you. Basis: steps you have asked us to take before a possible contract, or our legitimate interest in answering enquiries. |
| Market research survey | Your anonymous answers about your home and heating. Your name and email only if you choose to register interest. | To understand what local homeowners need, and to contact you if you asked us to. Basis: our legitimate interest in research; your consent for contact. |
| Home survey visit and quote | Contact details and address, details of your boiler, heating controls and radiators, room-by-room notes and photos of heating equipment, and your household’s usual heating pattern. | To design your system and give you a quote. Basis: steps you have asked us to take before a contract. |
| Quote and online acceptance | Your name, email, phone and address, the quote we prepared for you, and, if you accept it online, the name you typed, the date and time, the version of our terms you accepted, whether you asked for work to start inside the cancellation period, and a saved copy of the quote as accepted. We email you a confirmation copy. | To give you a quote, record your acceptance and carry out the contract. Basis: steps you have asked us to take before a contract, and our contract with you. |
| Our records of enquiries and customers | Notes of our calls, emails and visits with you, and reminders to follow up. | To deal with your enquiry or installation properly and keep an accurate history. Basis: our legitimate interest in running the business well, and our contract with you. |
| If you become a customer | The above, plus installation records, invoices and payments, and any follow-up gas statements you share so we can measure your results. | To install and support your system and keep business records. Basis: our contract with you, and our legal obligations (tax and accounting records). |
| Visiting this website | Anonymous visit statistics (pages viewed, approximate country, device type). | To see which pages are useful. Basis: our legitimate interest. Our analytics do not use cookies and do not identify you. |
We also keep business contact details (name, trade, phone, email) of electricians, plumbers and other tradespeople we work with, to arrange and manage jobs. Basis: our legitimate interest, or our contract with them.
We do not use your information for automated decisions about you, and we do not use it to build advertising profiles.
Your gas statements
Because statements contain detailed household information, we handle them with extra care:
- They are uploaded straight into private, access-controlled storage. They are not sent by email and are not visible on the website.
- Only ZoneWise staff who prepare your report can open them.
- We check every figure in your report by hand against the statements.
- We delete the statements within 90 days of sending your report, or straight away if you ask. We keep the figures in your report (such as your annual gas use) with your enquiry, so we can discuss it with you.
Who we share it with
We never sell your information. We share it only with the service providers that run our systems for us, under contracts that require them to keep it secure and use it only on our instructions:
- Supabase: database and secure file storage for enquiries, surveys and uploaded statements.
- Resend: sends our notification, quote and confirmation emails.
- Web3Forms: delivers contact and survey forms to our inbox.
- IONOS: hosts this website.
- Plausible Analytics: privacy-friendly, cookie-free visit statistics.
- Google Fonts: some pages load fonts from Google, which receives your device’s IP address to deliver them.
We may also share information if the law requires it, or with professional advisers (such as our accountant) where needed.
Some of these providers are based outside the UK, or use servers outside the UK. Where that happens, we rely on the UK’s adequacy regulations or on contract terms approved for international transfers, so your information keeps the same level of protection.
How long we keep it
- Uploaded gas statements: deleted within 90 days of sending your report.
- Enquiries that don’t go ahead: 2 years from our last contact, then deleted.
- Quotes that are not accepted: 2 years from our last contact, then deleted.
- Accepted quotes and acceptance records: as customer records below.
- Customer records: for as long as we support your system, and then for 6 years for tax, accounting and warranty purposes.
- Market research answers without contact details: kept in anonymous form.
Your rights
You have the right to:
- get a copy of the information we hold about you;
- ask us to correct anything that is wrong or incomplete;
- ask us to delete your information;
- object to, or ask us to limit, how we use it;
- withdraw your consent at any time, where we rely on it (this doesn’t affect anything we did before you withdrew it);
- receive information you gave us in a portable format.
To use any of these rights, email hello@zonewise.co.uk. We will reply within one month. There is no charge.
Keeping it secure
Our systems use encrypted connections. Survey records and uploaded statements are stored in private storage that only signed-in ZoneWise staff can access. Website visitors cannot read anything stored there.
Complaints
If you are unhappy with how we have handled your information, please contact us first so we can put it right. You also have the right to complain to the Information Commissioner’s Office: ico.org.uk/make-a-complaint, or phone 0303 123 1113.
Changes to this notice
We will update this page if how we use your information changes. The date at the top shows when it was last changed.