I don't think you has to give tenancy contract, but electricity bill is mentioned as one of prerequisite in the application form. Try to give copy of some electricity bill of any house under name of your company or last resort you give electricity bill of your house even if it is under your friend's name. Only thing is that you should submit it, so you fulfill all the required docs, and apply, and pray to god.If rest everything is inline they may not reject it only for this bill issue.