In article ,
says...

Churchill. No increase and no questions about who fitted it (thats a couple
of years ago, it may have changed now).

It has. Missus phoned last night. They want to see a certificate from
an approved installer. It can be a DIY install but needs to be "signed
off". Apart from that, no increase over standard quotes.

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Conor

Hi. This is my friend, Jack ****, and you don't know him.