Jerbourg
Only an unrepresentative survey of their EGBB-'JB-'JJ & vv. service, which I've used quite a bit lately. The loads to & from Guernsey have been poor (in the region of 10 to 25) on every flight that I've made.
This doesn't augur well; but I've not flown on that many flights, or any of the other routes, so I have no definitive answer.
Let's keep our fingers crossed !
PS The Jersey loads on these flights have been much better.