You'll be fine I was on an engineering course (electronic) we were all boys so it could have got a bit laddy but it was actually really cool you'll find the lad culture is a lot less at uni than collage and geeky people the kind that look down on you because your "not clever"like them don't last that long at all.
I found some of the most genuine people ever in my societies and I'm still in contact wit some of them the sports clubs like climbing and skiing are really cool and laied back but at the same time so supportive and friendly it great I mean yes rugby and football do seem very laddish but mostly everyone is really cool and you'll be just fine