Yes. London is a safe place, he can live anywhere he wants. Romford, Essex, not such a good place. But I reckon the Polish are a lot more annoying to racist folk than brown people.
I have not lived in any of the places your friend wants information on, so I cannot give you the information you require.
However, I know of lots of desi people who live in Walthamstow, Ealing, Croydon,Tooting and Surrey. Not too sure about Acton. I reckon East Ham would be ok too.
