They're Coming After Your Holidays...
News7 mins ago
No best answer has yet been selected by PAT60DUNNE. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.I don't mean to sound patronising, but I would really suggest that you get another couple of builders round to quote.
There is little point in asking a question on such a universal site as this - as an example - a builder in York may say that sounds expensive - but if all the builders in your area are very busy, they may charge a premium price. Unfortunately, you have to pay what the going rate is.
Obviously, try to get recommendations from other people as to who to get - I'd prefer to pay (slightly) more to someone who I trusted than get someone I didn't know about in.