The uk sort code, which is a six-digit number, is usually divided as 3 pairs of numbers, for example 14-33-58. It identifies both the bank and the branch where the account. the first digit of the sort code identifies the bank itself and in other cases the first 2 digits identify the bank.
There is a strong co-relation between BIC/Swift/IBAN Codes and sort codes, sort codes are not explicitly encoded into BIC codes . The bank itself was assigned a main number alphabetically; Lloyds Bank for example was allocated 5, National Provincial was allocated 7..
The British and Irish sort codes are only used for domestic money transfers. If money is being transferred across international borders, an international network is used. it is called as swift code or IBAN Code or International Code Characters 9 to 14 of British and Iraland (United Kingdom) IBANs hold the bank account sort code. .
sort code is the name given by United Kingdom banking industry to the bank codes which are used to route money transfers between banks within their respective countries via their respective clearance organisations. In Ireland it is known as the NSC or National Sort Code and is regulated by IPSO (Irish Payment Services Organisation). Although sort codes in both countries have the same format, they are regulated by different authorities as each country has its own banking system