to get the first month benifit of salery in england how much of enough balance required in his bank account for any employee according to british financial rules?
Sorry, I don't understand what you are asking. Are you asking whether you need to have any money in your account before you are allowed to use it as an account into which your salary will be paid. If so, i don't think there are any rules.
Are you referring to salary money paid from overseas into a UK account?