If you are not keen on sanding. Use Nitromores paint stripper. Get a small tin from B&Q. That stuff works wonders.
Nitromors is really effective but you need to make sure you absolutely clean the frame after, like meticulously, as it hides in corners around lugs etc and will eat the new paint just as effectively.
Nitromors is really effective but you need to make sure you absolutely clean the frame after, like meticulously, as it hides in corners around lugs etc and will eat the new paint just as effectively.