You can only download catch up if they license downloads... Boxsets still require family bundle...Yes
Murdoch mysteries series 9 is not licensed for down load from alibi nothing is...
not castle, not johnathan creek...
UKTV are not paying for download content license on SkyGo from there content providers for catch up...
All of Dave catchup content is streaming only...
All of History catchup channel content is stream only...
All of W catch up channels content is stream only...
Expect they do this so you can't avoid adverts that they will adding...