Hmm. I would drill the dropout through, pin it, and weld it up. Or maybe fabricate some thin (1mm) dropout-shaped plates and weld either side of the dropout (would need a longer axle, perhaps). You can do all of that yourself, except the welding bit. There is (or was) an excellent welder in Kelvedon, if you're willing to travel that far - he fabricated a new frame for my old 1960s convertible car's roof for about fifty quid, and it only took him a day.
Phew.
Hmm. I would drill the dropout through, pin it, and weld it up. Or maybe fabricate some thin (1mm) dropout-shaped plates and weld either side of the dropout (would need a longer axle, perhaps). You can do all of that yourself, except the welding bit. There is (or was) an excellent welder in Kelvedon, if you're willing to travel that far - he fabricated a new frame for my old 1960s convertible car's roof for about fifty quid, and it only took him a day.