No. London numbers start with code 020 (just 20 if calling from overseas) followed by an eight digit number starting with 3, 7 or 8, so a London number would look like: 020 3456 7890
This isn't a London code. It is the area code for Brentwood in Essex which is about 30 miles northeast of London.
National Westminster Bank,PLC 's Hammersmith Branch in London assigned SWIFT code is NWBKGB2153Q. There are two parts to the code: the SWIFT code (NWBKGB21) and the branch code (53Q)
020 is the telephone dialling code for all of London.
This sort code belongs to National Westminster Bank. This code is assigned to the Liverpool Street Station branch in London.
This sort code belongs to National Westminster Bank. This code is assigned to the City Of London branch.
NATIONAL WESTMINSTER BANK PLC, Charing Cross, London
This sort code belongs to National Westminster Bank (NatWest). This code is assigned to the London Bridge branch.
NatWest Bank London Sort Code: 56-00-03 SWIFT: NWBKGB2L
London's telephone code is 020 followed by an eight digit number which will start with 3,7 or 8. The number that you have asked about is not a London number as you have described it.
This sort code belongs to National Westminster Bank. This code is assigned to the Bayswater branch, located in west London, England.
In the UK, area code 020 is London, but there are no numbers beginning with 020 2. Other countries may have similar telephone area codes.
020 is London. 020-3 numbers can be anywhere in London. The operator who "owns" this number is Frontier Systems. Note that the area code for London is just 020, not 0203 or 0207 or 0208.