[Atarah]

You do realise you have two different house levels in your property. It was four storey property at the top end of Grange Lane. The entrance to the first two floors being from Grange Lane and a totally seperate entrance to a different property was on Wellington Street. When they highered the road in Grange Lane, the bottom two sets of windows then became BELOW ground level. If you peep down and look into the "cellar" of the property at the top of Grange Lane, you are actually looking at the bedroom windows.
Then you have an entrance on Wellington Street - so they are sort of back to back properties, one low down and one high up, if you get my drift. So your basements are actually the upstairs and downstairs rooms of terraced propety which once had a Grange Lane address (photo again shown which Retlaw kindly included in one of his posts).
Hard to explain, if you can do it any better Retlaw, please feel free to have a go. Tee hee.