Sometimes the simplest things are not quite so simple!
For anyone else that is trying to work out how edit a page settings in facebook to change the map location, is not that simple!!
So I finally worked out how to sort it
Open Facebook and your business page
Go to Settings
The Page Info
Scroll to the location area
The insert the new address and postcode – this doens’t change the map though!! (obviously we are not on Google!)
Now on the map itself you need to drag the PIN and reposition it to the right location – don’t just drag the map or just change the address neither of those will work!
Its simpler to make the map zoom less so you can move the PIN further
Once done you are done
Only took me 3 goes to figure it out!! Move the pin not just the map itself!