Aha! found a uk supplier with the SCA connector 
-> http://uk.rs-online.com/web/p/pcb-sockets/7293842/
Not exactly cheap at £3.56 a piece, not listed as a SCA connector but my measurements make it the same
They will do for initial testing, once it comes to actually producing any for sale i'll harvest them from the Chinese boards
-> http://uk.rs-online.com/web/p/pcb-sockets/7293842/Not exactly cheap at £3.56 a piece, not listed as a SCA connector but my measurements make it the same
They will do for initial testing, once it comes to actually producing any for sale i'll harvest them from the Chinese boards