DMS has 1 in stock to get you up and running again, if you like.
http://www.dms-racing.com/index.php?...category_id=44
But go for a full size servo, xpert do one for a bit more than your £40. I was in your position with a savox a while ago and got a 2nd hand KOPropo which has been great!!
Rule of thumb is buy the best and you'll never need a new one!!