Rohloff_Brompton_Rider
Formerly just_fixed
I'd leave out the it has been suggested to me bit for a start as this makes it look like others have been meddling. I'd also drop all the legal mumbo jumbo for a 1st letter of contact. Be more civil, wait for a response, if it is not adequite elevate your stated course of action in another letter. Go all out in the 1st letter you will put them on the defensive, and also leave yourself with no-where to go.
bollocks.
i ran a limited company for over a decade, i know what gets attention and what doesn't.
he has somewhere to go, court, they wouldn't have a leg to stand on, products supplied not fit for purpose etc etc.