They're not called pap smears in the UK - that's probably why you're not finding anything on a google search. That's a US term. They're called smear tests in the UK
Smear tests are free on the NHS. Women aged 25 and above are called routinely.
If you have symptoms that concern you, you should speak to your GP. They'll be able to organise any tests that you need, free of charge, including if they think you need a smear test.