Hi, I'm so sorry for any confusion, I'm not familiar with the area.
I'm assuming it's Brompton Middlesex as the family were living in Kensington (according to the 1841 census) and place of birth for Emily is shown as Brompton Middlesex on 1851 census.
Both Anthony and his sister Emily were both married at Holy Trinity Church Bromton, Brompton rd, Kensington and Chelsea and I have a copy of both marriage records, just can't locate birth/baptism for Anthony John Smith
Thanks Reeveh