Guernsey
A post on another forum suggests that Blue Islands has applied for a route licence to operate GCI-CWL. Presumably this would be a Flybe franchise as with its BRS-JER. CWL hasn't had a GCI route since 2001 when the BA franchisee (British Regional Airlines) operated a 4 x weekly service.
In 2013 Blue Islands applied to operate a 2 x daily GCI-BRS service in competition with Aurigny but the Guernsey licensing authority rejected the application which was then withdrawn. 3 x daily across two airlines was probably thought excessive for the route.
A GCI-CWL application would be likely to succeed as the route is currently unserved.
I'm unable to confirm the post on the other forum at the moment and I won't begin a separate Blue Islands thread until or unless the route is officially confirmed.
Interesting development given that only today in the Blue Islands BRS thread I've been questioning the viability of the airline.