Medical tourism to Australia from SE Asia, and possibly broader Asia, could make that market more lucrative than would seem at face value.
It's not huge markets, but I believe those could be applied for (and more importantly, approved) extremely quickly, which could triple (or more) the market based on UK approval alone.
The question remains, what type of cancer will they go for next? I know LP mention ovarian. Do they apply for multiple cancers under multiple applications, or do they apply for one cancer and do an add on after approval. In the UK, do they continue going for other approvals?