So on the Anglia I'd have to change the windscreen and door handles ? What else ? Wiper blades ,headlight bezels ? Bumpers ?
Not necessarily, You would need to check them all on the vehicle. I'm doing a Triumph Herald convertible at the moment, with very similar door handles. Luckily the chrome on them is a bit naff so we can radius them and have them rechromed, as with a couple of other trims/handles. The door handles don't even protrude out as far as the extreme edge of the vehicle so if needed (which it isn't) we could go to 50mm protrusion.
I think you would be quite surprised what would be ok on that car.