Seeing that it is an American work, I sort of doubt it wouldn't work on your player. After all, I assume zeuiax might have said something if it didn't apply to our region.
I looked up this for you, but BoB is not on there it seems. Look at the color coding for region:
http://www.blu-raystats.com/Imports/UKImports.php
here is the main US site, sort of a modem burner:
http://www.blu-raystats.com/Stats/Stats.php
The main thing I would do is to see if the UK version is any better or worse than the US version. BoB is great enough, and long enough, where IMO it's easily worth $25 more for better PQ, in the case that the US version is better. If the UK version is better, well have your cake and eat it!