Yeah its pretty much like a smear, speculum in, swabs and they'll also check the external area for signs or warts or sores.
They'll get in contact with you if there's something picked up, generally you get a text for chlamidia being clear at least, I got a slip in the post saying I was clear but that was because I told them it was fine to send stuff to my home address, if it wasn't they wouldn't have sent it.