Whether you want to sign up for one-month rolling SIM only contact or 12-month SIM only contract with a new network, you’ll have to pass a credit check.
For pay monthly, rolling contracts, the credit check isn’t as stringent as for 12 months. So if you’ve been rejected for a 12-month contract before, there’s no reason to believe you won’t be accepted.
But if you fail your credit check, that doesn’t mean you can’t get a good SIM only deal.
Pay as you go deals with some networks now offer monthly allowances that aren’t much less generous than SIM only contracts.
The only major difference is that you’ll have to remember to top up to ensure you’ve got credit.