To pay in at William Hill (or most of the other betting sites) you can use paysafecard (go to paysafecard.com if you want some infos) and you can pay in your money starting with 10, 25, 50 till 100€.
Cool, I'll have a look, cheers
You won't get another (starting) bonus then. But that's nothing to worry about, they normally offer some bonus stuff quite frequently.
I had never used my starting bonus and the code was still valid apparently, even though I got the code a year ago