Concerts around the country, later in the year, I think I've read somewhere (though NO details yet).
Tomorrow afternoon's tv might reveal more info:
on this afternoon's Alan Titchmarsh show, I'm almost sure Alan said ALW would be celebrating his birthday live on tomorrow's show.
Alan Titchmarsh show, ITV, 2.30-3.30pm.
(PS
AndrewLloydWebber.com says Andrew was born on March 22nd,
so I suppose the above means CELEBRATING live, not actual BIRTHDAY live.)