Thanks for the ping ELS.
Excellent post Pyro - it almost makes me feel homesick!
Did you catch the name of the priest offering Mass? I can't tell from the picture who it is for certain - could be Fr. Ignatius Harrison.
You will have to let me know next time you're over - we could meet up at the "O".
I don't remember who offered Mass, but I did hear Fr. Harrison lead Solemn Vespers on the Feast of Our Lady's Nativity on the 8th, via a BBC radio broadcast. The Oratory choir was absolutely beautiful, as always!