[Tower Ravens] tights!

Hey, Does anyone work near an M and S? I've now been in a couple and they haven't had the 100 denier ones other than mysterious woolen things or thermal (maybe not a great idea!?) if someone could pick me up a pair/couple of pairs I'd be really grateful and will reimburse when I see them on Friday? If not I'll try again, has anyone bought a pair recently and if so could they tell me which M and S they went to? To prevent me meandering around too much! Thanks :) Becky x