I doubt SKY will carry BBC or ITV channels on a pan european beam as neither the BBC or ITV have distribution rights for programs outside of the UK so if they were to offer the service outside the UK it would open a can of worms relating to copyright, distribution etc. etc. that I'm sure they wouldn't want to open.

It may also jepordise the SKY service which should not be broadcast to or have subscribers outside the UK for the same reasons. SKY are obviously fully aware that they do have European subscribers and for this reason they will not want to lose millions in revenue by cutting off their 'illegal but paying' subscribers in Europe.

It was interesting the case of BTSport at the end of last year.  It moved from Eutelsat (with pan-european coverage) to Astra 2F on a UK spot beam. Lots of 'European subscribers' who shouldn't have a subscription lost their service. Miraculously a few days later it moved from the UK spot beam to a pan-european beam. I guess the thought of the cancelled subscriptions was too much for them to bear.

Unfortunately the BBC and ITV don't charge subscriptions so will not lose anything by restricting their service to UK only.

Time will tell...