According to the Mail Online (which I think is London’s Daily Mail), our favorite cranky judge Len has had surgery for prostate cancer, which was in it’s early stages:

Strictly  Come Dancing judge Len Goodman has undergone surgery to remove a cancerous tumour in his prostate gland, he has revealed.

He had the operation three weeks ago – without telling any of his BBC colleagues – and now says he feels ‘right as rain’. 

The 65-year-old told The Mail on Sunday he will be back on the show in the autumn, and credited his swift recovery to doctors spotting the disease early at his annual check-up.

The news of Len’s cancer scare will come as a shock to colleagues on the hit BBC show, hosted by Bruce Forsyth and Tess Daly, because the ballroom dancing teacher has told only his closest friends and family.
‘No one at the BBC knows,’ he said. ‘I didn’t want to tell everyone – it’s not necessary to blabber it out to everyone.

Best Wishes, Len and I hope you are all well soon – if this article is any indication, it sounds like you are!