Without stoking the fires too much more as I really don't want to get stuck in the middle, the room was done to a strict "budget". When he came to price it up, Mum said she had £1500 to play with and that was that. As a result, she had to lose certain things off the quote like window blinds, a cabinet, larger shower screen etc.
Even then the guy got it up to £1700 for the work, but then at the end of it all he asked for even more!
Now I appreciate that 99% of the room has been done to an amazing standard, but given the original budget was £1500 and Mum has a quote in writing for £1700 at the absolute most, this has put her in a bad mood over it straight away.