its not what he earns that counts (thou the more the better ) it's what he has left at the end of the month that counts, he needs money to support you, so you will not need recourse to public funds.

there is no set minimum figure, but many people use what you would get if you could claim social security, for couple after hes paid his rent and poll tax, (not sure if utility bills are included - i dont think so) he needs after paying them £110 a week for you both to live off.

this is a rough guide thou