Well it seems pretty obvious to me that French officials are not going to try very hard to stop these people leaving so we need to ensure they are sent back or give notice that we will not be rescuing anyone, I'd be happy to see warning shots fired to try to force them to turn round- we could say it's all part of a post Brexit hard border
Unfortunately not one of the illegals/criminals will be chucked back...here to stay and they know it...and they knew it before setting out with their mobile phones, just waiting to be picked up..they know its not if but when...
They should take a firm stand by approaching the incoming vessels and announce that they are now illegally in British waters and ordering them to turn back because they will not be allowed to land.