I had an issue with my Flyers radiator. The overflow had become detached inside the radiator and had vibrated so much that a leak had appeared where the pipe exits the radiator. I had resigned myself to having to have the radiator disassembled and then rebuilt and re nickle plated. I went to see Lloyd of Bryan & Son in Tunbridge Wells and he reconed he could solder the pipe from inside working though the filler. He did a great job and I collected the repaired radiator the next day!!
I have no connection with the business other than being a very satisfied customer. Highly recommended for your vintage radiator repairs!