Harry Bloomfield wrote:

Then I tried to trace where the call had originated 0113 is a Leeds
code, also our area code, except all of our codes (so far as I am
aware) have a 2 following the code - 0113 2??????.

All old Leeds numbers were prefixed with 2 when the STD code changed
from 0532 to 0113

01134 didn't seem to exist, or so it seemed from Google.

0113 x?????? numbers exist for all values of x except 5,6,7, or 9

http://static.ofcom.org.uk/static/numbering/sabcde11_12.xls