Thank you all for the replies.
I had found out various things for myself, but even the in-flght magazine didnt seem to show any film listings. Wondered if I was missing anything.
Oh well, the children will just have to amuse themselves....maybe even spend some time talking to their parents :-)
In fairness they both love to read, but just worried that 4.5 hours is a lot of reading! The return flight is overnihgt so actually glad there is limited IFE so they can actually sleep!
Thanks again all.