Have you lost a grey beautiful dog (Weimaraner) I think... There is one walking up and down magdalen road sw18... And also a man who is scruffy drinking lager in a can (it's 9am) calling the dog Alfie. I have now seen the dog by itself without this man.
I hope you don't think I'm being judgemental, I have seen this man walking in earlsfield often with an expensive looking dog. (Never the same one)
He may be a professional dog walker but I have a feeling this may not be the case.