I have noticed recently that there seems to be a lot more J Dramas being added to Netflix in the UK with with a mix of older an new shows, I am wondering if this them finally picking up on how successful kdramas are and starting to make them more widely available?

Yes, Netflix has been adding more Japanese dramas (J-dramas) in the UK, including both older and newer shows. This could be a response to the growing global popularity of K-dramas, as Netflix may be looking to expand its selection of Asian dramas to reach a wider audience.