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Complaints and Feedback
Start with the job, contract or quotation reference and the site it relates to, then set out plainly what went wrong and what you would like done about it. If the matter is affecting safety or stopping part of the premises from being used, say so separately and clearly.

Supporting information that helps
Dates, earlier correspondence, service records and photographs help where they bear on the point at issue. Stay with the matter itself; third-party details belong only where the concern cannot be explained without them.
How a concern is dealt with
The company responsible reviews your account and its own service records in line with the complaints policy we publish. Keep everything you send, and supply further material through the contact details below.
Handling your information
The privacy and business information page is worth reading first. A complaint needs the facts and nothing more; confidential property or personal records should go by an agreed route instead.
Other help
All routes are listed under contact us; services and practical guidance may also help.