<p>Avenue Q isn’t opening until June here in London. I second alwaysmom’s suggestion of ‘Billy Elliot’ if you’re looking for a musical. As Americans in England, we’ve found that the big Broadway musicals don’t always transfer that well here - might be better to see a truly ‘English’ production, e.g. Judi Dench and Peter Bowles are opening in Hayfever in April. The link LIttle Mother posted above is the main site to let you know what’s on, what’s coming, what’s at the halfprice tkts booth. And your son will be eligible for £5 seats at the RSC under its young people’s scheme ( for ages 16 to 25 - tkts sell out very quickly.) Kevin Spacey has introduced something similar at the Old Vic, so always worth asking if there are ‘concession tix’ when booking. Have a wonderful trip.</p>