The NHS website suggests that Covid antibody blood tests are available to the general public in private clinics. I've checked a couple of big names that I would trust - BUPA and Superdrug - and for some reason neither are offering services north of Yorkshire! I want something in the Sunderland area if possible, or nearby, but I'm worried about Googling for random private clinics in case they are rogue operators. Any insights on how to find a legitimate service?