Do you mean Havant in Hampshire?
The code for Havant, along with Portsmouth, Southampton and nearby is 023, followed by an eight digit long local number. (So, for example, 023 9234 5678).
If you are given an old Havant number that is only six digits long, you should put '92' in front of it to get the full number. For example, the old number Havant 345678 would now be dialled as (023) 9234 5678.
All UK area codes begin with a 0. There is no area code 6010 in the UK, and there is no 06010 code either.
UK area code 020 is London.
Halifax, Havant, Hampshire
There is no area code 20 in the UK
There is no 01134 code in the UK.
The country code and area code of Aberdeen, United Kingdom is 44, (0)1224.
Cambridge is in area code 01223, or +44 1223 from outside the UK.
In the UK, 0121 is the area code for Birmingham.
Until the early 1990's, area code +44 21 (or 021 within the UK) was Birmingham, which is now area code +44 121 (or 0121 within the UK). There has never been an area code +44 217 (or 0217) in the UK.
The area code "029" is assigned to the city Cardiff in Wales, UK.
Havant College was created in 1974.
Slough. There is no 0753 code in the UK.