Willie Everlearn - don't forget that it was the Yanks that were bleating about AACs, not the Brits.
Canada has always (unlike the States) honoured the reciprocity system - ie Canadians can come over here with their aircraft in the Summer to help out UK carriers; and in the Winter we do the same over there.
Right now, the problem seems to be that with the exception of Air Transat, all the charter carriers have gone bust - so there's no one capable of operating. Having enjoyed fun and games with Transport Canada trying to get them to issue various approvals, there's zip chance of anyone being able to be up and flying in time to give the Canucks their chance of a few days in the warmth of the Caribbean or Mexico.
The Air 2000 proposal is therefore the most logical one.
SunSeaSandFly - true, but I suspect that most Caribbean crews when given the choice between spending Carnival season shuttling between the frozen north and the European steppes would prefer to be at home.