The capital cities of all four UK nations simultaneously marked Holocaust Memorial Day on Thursday evening. Belfast City Hall, Edinburgh Castle and Cardiff Castle were lit up in purple. In London, people lit candles and watched a display on the screens in Piccadilly Circus, whilst a candle was displayed in the window of 10 Downing Street. Report by Jonesia. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn