accidental edits (changeset numbers added to original question)

It looks like editing on my iPad was a bad idea, using pinch to zoom in and out I think I must have moved some nodes rather drastically. I have undone everything from my current session but can't undo those before, and don't have the expertise to detach the mistakes from the features they are now aligned with. Could someone have a look? Adjacent to Argall Avenue Industrial Estate London E17, there are a couple of service roads that are clearly dragged some 300m away from where they should be. I feel I should leave it rather than risk making it even worse. Changesets 97251606 and 97252149 if it was me.