Can't comment on others but we had Sharps do the main bedroom to her indoors specification.
Can't complain at service or quality, but best to wait for their sales as can be expensive otherwise.http://www.sharps.co.uk/
Oddly enough, we had precisely the opposite experience with Sharps. The salesman was so negative that in the end he lost a good sale because nothing we wanted was 'doable', they only seemed to want perfectly rectangular areas, there was 'too much space' here and 'not enough space' there and the number of times we heard a sharp intake of breath followed by "You can't do that" became somewhat tedious.
It was as if you had to change the shape of the bedroom to fit in with Sharps fittings. Sorry, but I cannot recommend them at all based upon our dealings with them.
Oh, and apparently, any commission worth less than Ã‚Â£6000 ( this was 10 years ago) wasn't worth the salesman paying a visit.