I had to laugh when you said ‘ it works in Canada so it must work in the U.K. ………..oh If it was that simple !!There's one called "myflixer.vc" You could try that...I don't know about international availability. But if it works in Canada, it should work in the UK.
I did look at the site and did look at the films but every time you hit certain things it links you to all kinds of websites and ads.
Also I notice that The Whale was listed,I know for a fact that this movie is not out in the U.K. or on Any of the legit streaming sites yet. It is only available at the Cinema.
So I will wait until it comes to Netflix xx