Made the changes as far as I can. The southern exit from Tower St
to Monmouth St I can't do as that part of Monmouth St is L3. Also I'm getting reverse connectivity messages for Earlham St from the connection at the roundabout to Tower St (it's as if waze wants it put back the way it was - I just can't seem to make waze happy?!)
The GSV view of Earlham St has it connected to Shaftesbury Avenue, but the Roadworks.org version has it marked as a footpath only, so tempted to leave it well alone.