Don't waste your money on MA props. Best used as door jambs or paint stirrers, but only for low-quality paint; for the good paint you should still use a proper wooden stick.
are the good stuff as far as sport flying goes. You can order directly from their site; I haven't tried it but I'd assume they're not awful. Dunno if shipping to the UK will be cost-effective, though... Aren't there any UK-based stores selling them?