Shuttvr imo make very high quality cycling clothing up there with Rapha, Velobici etc. They have an offer on there excellent bib shorts of two pairs for £65. I think it ends tonight though.
http://www.shuttvr.com/shop/productdetail/Club-Bib-Shorts-Bundle/
http://www.shuttvr.com/shop/productdetail/Club-Bib-Shorts-Bundle/

I often cycle with an Abus Granite X-Plus (which weighs just a little bit more) and an Abus chain lock in my backpack. They don't add any noticable time to my commute at all, they barely add any weight in comparison to the huge mass that is a human being. Will admit though, after more than 8 miles they do start to make my back ache a bit, but a 5 min break usually sorts that.

