Further to what I said in my last reply. This is ihe info I got from OFTEL UK.
+442204 Local 02204
The 02204 dialling code covers Geographic expansion and the surrounding area.
Oftel records show that numbers starting 02204 993 are protected from allocation. Where numbering capacity has been withdrawn from service, the block or code is sterilised for a period, typically 2 years. Alternatively the Oftel Numbering Unit might protect capacity for a limited period, to avoid dialling errors into similar codes.
Phone numbers beginning 02204 are geographic numbers.
(02x) xxxx xxxx
London (020 area code) Southampton (023 area code) Portsmouth (023 area code) Coventry (024 area code) Northern Ireland (028 area code) Cardiff (029 area code)
It looks like the 022 range is not in official use & is being highjacked.