If your question is in any way related to this earlier question of yours, I think you are on a hiding-to-nothing.
http://www.theanswerbank.co.uk/Law/Civil/Question1190994.html
I never answered your earlier question (above) about when OS started using aerial mapping data because I don't know. At a guess it is probably in the sixties.
I suspect this is something to do with you representing yourself in a legal case over land boundaries - and the relevant dates seem to go back a long way. If you want a general comment on what you are seeking to do, then you could post a few salient facts as an answerto this. I provided some remarks about the difference between legal boundaries (as shown by the LR and on title deed plans) and how this compares to a physical boundary between two parcels of land on the ground here:
http://www.theanswerbank.co.uk/Law/Civil/Question1213320.html
Your case also seems to involve a claim for adverse possession over some aspect of the boundary.
If you don't want to go into details, perhaps at least tell us how wide a strip of land you are dealing with here.