Welcome from another London Roadster owner.
I agree on the wipers, just go purchase a single long one and take out the rubber to replace. Unless of course, it’s not the rubber that’s the problem.
P.S. is your windshield sticker still in-tact? Mine is worn away and as I was doing some work yesterday, I thought to myself, “self, you could get a new sticker made if you only remembered what it looked like…”
Stephen
Buxton, Maine
1982 London Roadster - "Kit Kat"