The Speaker of the House of Commons has sought to reassure MPs over parliamentary security, after a it emerged a researcher at the heart of Parliament had been arrested on suspicion of spying for China.

Sir Lindsay Hoyle said: “The House follows the same vetting procedures as the government … we keep our security arrangements under review at all times, in order to deal with the evolving threats.” Report by Buseld. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn