The UK's always been one of the most customer-friendly places one can think of. Their services are always oriented towards the desired clientele. I suppose those safety videos were for the benefit of the Lebanese/Arab communities in Oz and Cyprus.
Compare it to other countries-Cairo Airport is a good example of bad customer service. Key signage (directing to check-in, gates etc.) at the apt is available only in English. On the other hand, I've heard Gulf Air at BAH announce flights bound for India in Hindu.
IMO, standard should be local language of country, English and language of country of destination.