custom jerseys

For a printed stock design, you could do no better than cycle-clothing.co.uk

For Yaxley Riders they did excellent printing on a standard design, 4 piece minimum and quick delivery.

You could try Kalas; http://www.kalaswear.com/ I don't know what their minimum order levels are, but we just ordered a handful of jerseys for an event and they were very great.

Alternatively, there is Champion systems, who I have also heard good things about; http://www.champ-sys.com

foska do them too http://www.foska.com/custom-kit-design.html#Custom
thought the shutt vr ones are merino

This summer I was part of a group doing a charity ride (for the Forces Children's Trust). We got jerseys from Owayo and I was pleased with mine. The only unfortunate thing is that after a bit of a crash, I'm left with a large hole in the back! Hence I can't comment on the longevity/durability.

you could this lot..

http://www.provisionclothing.com/

Have had some for work from Owayo (.com), but if I'd have had more time to research them would have tried out Shuttvr.