It's here! I was like a kid at Christmas it was almost pathetic! It took longer than anticipated however. I rang up after 6 weeks and the chap at MSA said they'd left a message for me on my mobile, number 07575.... as my number actually starts 07979 that could explain things. The message apparently said I sent a cheque for £50, and not £51 which is the actual fee. Oops!
Anyway, it's now here, and the first step is complete. Next for some race wear, when the bank balance has had time to sit down and rest...