That was a lot of fun! I mean, it's not just that you've got the Royal Marines playing Wing Commander. You've got the Royal Marines playing Wing Commander at Royal Albert Hall, in the presence of Her Majesty, the Queen. I mean, sure, they try to be creative with their musical choices and don't stick to "high culture" by any means (they've even had an ABBA-based arrangement in earlier years) - but still.
And certainly, it made for a great opening. Rearranging the stringed sections for brass and woodwind instruments was a neat trick.
The only thing I found a tad disappointing was the fact that the compere didn't name the composer afterwards - he said what film the music was from, and who arranged it, but not who composed it. And he did seem to mention the composer for most or all the other pieces (at least in the first section - I didn't watch much more than the first twenty minutes of the concert).
Also... how weird is it that this festival, which has been going on for 45 years, doesn't even have its own Wikipedia page? I mean, sure, it's not exactly the most important event in the world, but... you know, there's certainly a lot of exceedingly trivial crud on the Wikipedia, so this absence seems remarkable.