Not tech related, but great for some cheap quality work clothes. 

Marks and Spencers online sale on at the moment, http://www.marksandspencerlondon.com/nz/l/sale/men/?intid=hp_ban_1_2#page:1

Shirts about $20, Trousers about $30.

Free delivery and can spend about $220NZ before the customs charges take effect.