have you tried places in the US?
Or try going to Yahoo UK and look for punk clothes. Most places I've gone to in the UK ship to the US. However, their currency is much more powerful at the moment and you'll end up paying a lot more for something you could probably get here in the US.
Here is the link to UK look up:
this lady does all kinds of custom made things.. clothes for people, household items, gifts, etc.. http://doggiedoodles.com/
www.championdogclothes.com she can embroider a design on just about anything.. tshirts, towels, etc.. she mostly has dog clothes listed on her site, but has lately been doing more embroidery work.
ebay.com you'd be surprised what you can find