I've already bought a singlet for WAM, but I'm still looking at Adidas ones, I've found them, quite reasonably priced, I'm just undecided about the colour, that's why I've set the poll below.
Adidas speciality sports has those, depending on the vote, there are red and blue singlet's at £40 each or those two colours in a pack for £62. I was looking at Amazon as well, but they don't have the pick up/collection option; a shame, since they offer the red/blue reversible singlet.