For just over £100 you can get the Audio Technica ATH-M50 which is probably one of the most recommended heapdhone in history, not because it is super-amazing, just because there is very little else that performs solidly in that price bracket.
For around the same price you can also get the Sennheiser HD 25 SP II, which as far as I know uses the HD 25-1 II drivers with a cheaper headband and cups. The 25-1 II is a great sounding headphone so they might be worth considering. It's supra-aural (pads on ears) though while the M50 is circum aural (pads go around the ears).
The Aurvana Live is still worth considering. It doesn't feel as solidly built as either of the above headphones, and doesn't fit big eared people like me, but it did sound kind of nice when I tried it out.
There are probably others but I don't want to recommend anything I haven't personally tried (I haven't tried the 25 SP II but know the 25-1 II well so...). Hope someone else can chime in with other ideas, and good luck with the search.