Oh dear, You could try PMing some members see if they know any, i no there are some, there was a thread ages ago, and im adamant they found someone then..
Are you moving to England?
if you are you could ask someone to care for them for a week, and then have someone mail them too you?
Breeders in the US ship to England all the time
I might be too late... but Thomas Cook let my friend take her snake. I think she had to pay extra for it, but it may be worth it.
AND they go directly to London Gatwick from Vancouver.