Coming in a bit late here, but just to add that my experience with Mayo vets in Sydenham has been good so far, even if the circumstances (the illness of my cat and subsequent euthanasia) were not. In fact I went to them after I had moved from Brixton where I formerly went to Brockwell Vets in Herne Hill. Unfortunately my experience with them was not good. I discovered after having to put my cat down that they had identified a lump on her stomach some 7 months earlier, but not passed on their suspicions to me. By the time that problem was correctly diagnosed my cat was very ill and I had to put her down within a week. I have asked Brockwell Vets for an explanation as to why they did not share their concerns with me, as well as an apology. All they have said is that they asked me to return for a check-up, and that conditions such as the one that affected my cat are generally untreatable. While the latter may be true it still rankles that they did not share their suspicions and concerns with me.