You did ask this a few days ago. Bucks is a fairly large county, so it depends where you are. My previous response was:
Depends where in Bucks you are, but you could try IDDEA.co.uk - although
their head office is in Wiltshire, they have a base in High Wycombe and
cover south Bucks. Be aware that good installers are very busy at the
moment.
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