I wouldn't call it an "easier" medical but other countries do have a different emphasis on certain aspects of your body. So you may find that the FAA does not have this technicality that has grounded you, but may be tighter in another area where you are perfectly fit.
Australia has medicals like this. Find an Australian authorized DAME in UK (the CASA web site should help you on that) and have a word. Then you can have a neat holiday in Oz and do your PPL flight test (you'll need to do air law- groan...)
Now this is the bit I am not sure of in UK, but as far as I know you will then need to re-register your machine under a VH reggo. You will need to have an Oz mechanic sign off on the maintenance but that is not as difficult as it sounds. There's probably half a dozen passing through Earls Court on any given day who would be happy for the holiday pay.
Never give up. There are most likely ways round this.