the Co-op, £1400 overdraft... you cant beat that. Its the only bank to offer GUARANTEED £1400 overdraft, the others either have a smaller overdraft, or say something vague like up to £3000 overdraft - which noone really gets in their first year.
that being said its a relatively hard bank account to get if you have no credit history. Natwest is okay, but they no longer offer the railcard to new customers.