Think I can close this one out myself.
The two sets of coordinates given for the map display box,
-2.6792478561401367 %2C 51.20194098139094 %2C -2.6747900247573857 %2C 51.203393006907376
Will generate a zoomed in area with the need of an altitude.
Have discovered that this is probably a browser settings problem, using Firefox I get the un-zoomed map but using Chrome, AVG, Edge or Safari it works fine.