And the answer to the Merit puzzle is...
*Drumroll*
Sky now own it!
Thanks to AdamJC99 on Twitter who noticed the OFCOM change.
https://twitter.com/AdamJC99/status/1296837390057771011
http://static.ofcom.org.uk/static/ra...rit.htm
So it must be for Sky Arts, or Pick if they decide to give Sky Arts the better LCN.