It's years since I've been to London and I'm trying to finalise our plans. I want to take my kids to Covent Garden but I can't remember if the street performers are on all the time or just at weekends. Do any of you lovely people know? I was hoping to go to Highgate cemetery, but I think I've left it too late to book a tour. I've booked a trip on the London Eye and my son has requested a trip to theTate Modern. Anyone got any other suggestions?