Under a former London Plan it was projected that by 2026 the Bakerloo line would be re-extended from Harrow & Wealdstone to Watford Junction, restoring the pre-1982 service.
I en tidligere London Plan blev det projekteret at Bakerloo line vil blive genforlænget fra Harrow & Wealdstone to Watford Junction i 2026, hvilket vil genoprette betjeningen fra før 1982.