Privacy Policy

Last updated: 29 June 2026

Privacy Policy for Henco Heating Ltd t/a Gas Mark 1 and Herts Bathrooms and Kitchens

Henco Heating Ltd trading as Gas Mark 1 and Herts Bathrooms and Kitchens (“we”, “our”, “us”) is committed to protecting and respecting your privacy.

This Privacy Policy explains how we collect, use, store and protect your personal information when you use our services, contact us, visit our website, or interact with us in any other way.

We process personal information in accordance with the UK General Data Protection Regulation (UK GDPR), the Data Protection Act 2018 and other applicable data protection legislation.

1. Who We Are

The Data Controller responsible for your personal information is:
Henco Heating Ltd
Trading as Gas Mark 1 and Herts Bathrooms and Kitchens
15-21 Market Street
Watford
Hertfordshire
WD18 0PA

Telephone: 01923 231780
Email: office@gasmark1.com

If you have any questions about this Privacy Policy or how we handle your personal information, please contact us using the details above.

2. Personal Information We Collect

We may collect and process the following categories of personal information:

Information You Provide to Us

Full name
Property address
Billing address
Email address
Telephone number
Details of your enquiry
Details relating to your boiler, heating system, plumbing installation or property
Photographs of installations, equipment or property areas relevant to quotations, servicing, repairs or installations
Correspondence between you and us
Information required for quotations, installations, servicing and repairs

Information Collected Automatically

When you visit our website, we may automatically collect:

IP address
Browser type and version
Device information
Operating system
Website usage information
Pages visited
Time spent on pages
Referring website addresses

CCTV Footage

Where CCTV systems are in operation and appropriate signage is displayed, we may collect video footage for security and safety purposes.

3. How We Collect Your Information

We collect information when you:

Contact us by telephone, email or post
Submit an enquiry through our website
Request a quotation
Book an appointment
Purchase our services
Leave reviews or feedback
Interact with us through social media
Visit premises where CCTV is operating

4. How We Use Your Information

We use your personal information to:

Provide gas engineering, heating and plumbing services
Arrange boiler servicing, repairs and installations
Carry out bathroom and kitchen installations
Carry out site surveys for the purpose of generating quotations
Assess properties and prepare quotations
Schedule appointments and engineer visits
Communicate with you regarding annual servicing when it is due
Process payments and maintain accounting records
Register warranties and manufacturer guarantees
Comply with Gas Safe and other regulatory requirements
Improve our services and website
Manage customer relationships
Investigate complaints
Protect our business, employees and customers
Operate CCTV systems for security purposes

5. Lawful Bases for Processing

Under UK GDPR, we rely on the following lawful bases:

Contractual Necessity

We process personal information where necessary to provide services requested by you, including quotations, repairs, servicing and installations.

Legal Obligations

We process personal information where required to comply with legal and regulatory obligations, including:

Gas safety regulations
Tax legislation
Accounting requirements
Health and safety obligations
Insurance requirements

Legitimate Interests

We process information where necessary for our legitimate business interests, including:

Managing customer relationships
Improving services
Website administration
Preventing fraud
Ensuring security
Operating CCTV systems
Contacting existing customers regarding recommended boiler servicing, maintenance reminders and safety-related follow-up communications

Consent

Where required by law, we will obtain your consent before:

Sending marketing communications
Placing non-essential website cookies

You may withdraw consent at any time.

6. Sharing Your Information

We do not sell or rent your personal information.

We may share your information with:

Employees and engineers working on your project
Approved subcontractors
Product manufacturers
Warranty providers
Gas Safe Register and certification bodies
Accountants and professional advisers
IT and website service providers
Payment processing providers
Regulatory authorities where legally required
Law enforcement agencies where required by law

All third parties are required to protect your personal information and only use it for authorised purposes.

7. International Data Transfers

Some of our service providers may store or process personal information outside the United Kingdom.

Where this occurs, we ensure appropriate safeguards are in place to protect your personal information in accordance with UK data protection laws.

8. Data Retention

We retain personal information only for as long as necessary.

Typical retention periods include:

Customer and Job Records
Up to 6 years after completion of works to comply with legal, tax and contractual obligations.
Financial Records
Up to 6 years in accordance with HMRC requirements.
Warranty and Installation Records
For the duration of any applicable warranty period and related legal obligations, usually up to 10 years.

CCTV Footage

Normally retained for up to 30 days unless required for:

Incident investigations
Insurance claims
Legal proceedings
Law enforcement requests

When information is no longer required, it is securely deleted or destroyed.

9. CCTV Monitoring

CCTV systems may operate at our premises and other locations where appropriate signage is displayed.

CCTV is used for:

Crime prevention and detection
Protection of property
Staff and visitor safety
Investigation of incidents

Access to CCTV footage is restricted to authorised personnel only.

10. Marketing Communications

Where you have consented, we may contact you regarding:

Company updates
Promotions
New services
Customer information

You may opt out of marketing communications at any time by:

Clicking the unsubscribe link in relevant emails
Contacting us directly by email, phone or post

11. Cookies and Website Tracking

Our website uses cookies and similar technologies to improve functionality, analyse website traffic and enhance user experience.

Cookies may include:

Essential Cookies
Required for the operation and security of the website.
Analytics Cookies
Used to understand how visitors use our website and improve performance.
Marketing Cookies
Used to measure advertising effectiveness where applicable.
Non-essential cookies will only be placed on your device with your consent.

You can manage cookie preferences through our cookie banner or your browser settings.

12. Data Security

We take appropriate technical and organisational measures to protect personal information from:

Unauthorised access
Accidental loss
Disclosure
Alteration
Destruction

These measures include secure systems, restricted access controls and appropriate staff training.

While we strive to protect your information, no method of electronic transmission or storage is completely secure.

13. Your Rights

Under UK GDPR, you have the right to:

Be informed about how your information is used
Access the personal information we hold about you
Request correction of inaccurate information
Request deletion of personal information where applicable
Restrict processing in certain circumstances
Object to processing based on legitimate interests
Request transfer of your personal information
Withdraw consent at any time where processing relies on consent

To exercise any of these rights, please contact us using the details provided above.

Requests relating to your data rights should be submitted to office@gasmark1.com. We will normally respond within one month in accordance with applicable data protection legislation.

14. Children’s Privacy

Our services are not directed at children.

We do not knowingly collect personal information from anyone under the age of 16.

If we become aware that such information has been collected, we will take appropriate steps to delete it.

15. Complaints

If you have concerns about how we use your personal information, please contact us first so we can attempt to resolve the issue.

You also have the right to lodge a complaint with the Information Commissioner’s Office (ICO), the UK’s data protection regulator.

Information Commissioner’s Office
Wycliffe House
Water Lane
Wilmslow
Cheshire
SK9 5AF

Telephone: 0303 123 1113
Website: www.ico.org.uk

16. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in our services, legal requirements or business operations.

Any updates will be published on this page and the “Last Updated” date will be amended accordingly.

We encourage you to review this Privacy Policy periodically.

Wayne Harris

3 months ago

We’ve recently had three bathrooms fully refurbished along with a complete new heating system and boiler relocation, and our experience from start to finish has been fully deserving of five stars.

The whole team have been very professional throughout. From our first visit to the showroom and throughout consultations, site surveys and delivery of the project, the communication has been clear and consistent, and nothing ever felt like too much trouble — the team have a genuine “can do” attitude and creative approach that is focused on delivering great service and a fantastic end result.

The project has felt like a partnership rather than a blunt client/contractor relationship and they have worked with us from the start to explain options, offer suggestions and work with us to get the details right.
Just as importantly, they were reliable and respectful of our home — turning up when they said they would, keeping things tidy, and keeping the schedule on track.

Stew was extremely helpful during the consultation and design process and Jason was incredibly meticulous with the central heating works.
Special mention goes to Tom H. for his attention to detail and for working tirelessly to ensure that we were satisfied.

We’ll definitely be using Gas Mark 1 / Herts Bathrooms again for future work and wouldn’t hesitate to recommend them.

Martin Geoffrey Moore

A nice experience. We recently refurbished our bathroom and these guys were great. We were very impressed by their total attention to detail, their focus on the job and the way they made every effort not to leave any debris or waste behind them. Thank you!

Jo Windmill

Tom and Harry, really professional - great job! Would recommend. Thank you 🙏

Kevin Petty

5 months ago

Thanks to Charlie, Tom and all the team for a fantastic job. We are delighted with our new bathroom. From start to finish great care and organisation has been taken to keep disruption to a minimum.
We have no hesitation in recommending Gas Mark 1

James

6 months ago

Very happy customers! Gas Mark 1 and Herts Bathrooms were excellent every step of the way. Communication was fantastic throughout and the work was undertaken to our complete satisfaction. Gareth (engineer) and his team were polite, considerate and very easy to get on with. Highly recommended

Libby Pfeiffer

We are delighted with our new kitchen. It is lovely and most importantly, it was put in so well by GasMark1.
Alex and co were totally professional, polite (and nice).
Special mention and thanks for Alex, a Perfectionist!

Natasha Proctor

Would absolutely recommend Gas Mark 1 - we got our boiler replaced, a new radiator installed and an electric shower put in the bathroom and the team were brilliant. Always arrived on time each day, were very knowledgeable and great at explaining what was happening and left the house without any mess. We'll be getting them back in for work on the kitchen next!

Coral

7 months ago

We had Gas Mark 1 round to install our washing machine. Barney visited this morning to survey the job and managed to get two guys to install a couple of hours later. Great service as usual. They installed our kitchen 7 years ago and were reliable then. Great to see their customer service is still the same as are the three guys that came today, so not a high staff turnover.
Wouldn't hesitate in recommending this company.