asda for £12 each! They had lots of different ones in, various styles and colours (both of mine were black). One I bought you could buy in cupsizes, mine was 34E/F, and other I bought in a standard clothes size 14.
Both fit really well and hold my boobs in without squashing them. Just thought I's share as can be expensive buying a swimming costume when large up top.
If I get chance I will see if they are on the website and post links later but I may not get chance today.