Seeing as you are in jolly old England, how about a pair of Naim N Sats wall mounted? Apparently they are very quick and musical sounding speakers and have proprietary wall brackets. That would be a good comprimise if floor space is an issue. In wall speakers are definitely going to comprimise your sound quality big time and although on wall is not ideal, you will still get great sound. Just add a Nait 5i integrated and you're making some serious music while avoiding the tower speaker thing at the same time. They also make a matching sub that you could hide behind something if you can pull it off.
Good luck for sure, fortunatley my girlfriend of 10 years knows full well that whatever audio gear that comes in the house is beyond her control and is cool with that. Although, I always use her ears as well and respect her opinion which is unclouded by reviews, what other people say online etc. Regardless of what you should choose, be sure to have a listen first. Being in England where there is solid interest in audio, there will be lots of options that you can persue over there...