I like winding rags up by saying old trafford isn't in manchester.
But according to many source it is. Sadly address validation is part of my job. An easy way to check is by looking on the royal mails postal address file (
https://www.royalmail.com/find-a-postcode ). That has old trafford in manchester. Maybe Old Trafford isn't what i should have checked but it seems sensible.
These things happen all the time. Stockport used to be Cheshire, Croydon used to be Surrey. Although County isn't strictly part of an address so that's a bad example i guess.
Right bored myself to slee