Hello Lesley
I have found Upper Carlisle Street (Marylebone) and looked for George but did not see him. The ref is RG 9 87 f 50-57 - you may like to have a look too.
I did see a Chatterly family living there (headed by a George) and I wondered whether George Batten had given this address as one of convenience.
In the street index Upper Carlisle Street is shown as being part of Richmond Street.
I wonder where George was hiding in 1861 or whether he
was on one of the missing census pieces?
I see you were asking about researching police records. I have never done this but suspect you might need to go to Kew or get a researcher. However, maybe someone with some knowledge on this will provide an answer now this post has bee revived!
If not, do use the Search function on Rootschat as I am sure this query has come up before. And then if you still need help post a new question.
I am sure somebody can advise

Barbara