The BT Tower has been the tallest thing on the north London skyline for 50 years in 2015, holding its straggly spike of antennae at a lofty 191 metres above Fitzrovia's pavements. The building (which at this point was known as the Post Office Tower) housed a revolving restaurant on from 1966 until 1980, and to celebrate its golden anniversary guests will be able to dine on level 34 once more, enjoying a spectacular, 360° view of London as they tuck into either a four-course lunch (£49.95) or seven-course dinner (£67.95). As demand for the two-week opening is likely going to outstrip places at tables, the spaces will be allocated in two ballots; one for the first week, open Jun 22-29, and one for the second, open Jun 30-Jul 7. Those who are not lucky in the restaurant ballot will be entered into a draw for autumn events on the 34th floor at which guests will be served free drinks and snacks. All profits from the event will go to ChildLine.