Pressure continues to mount on Boris Johnson over sleaze accusations, as the Electoral Commission announces a probe into how a refurbishment of the flat at No 11 Downing Street was paid for.

Mr Johnson said that he had paid for it himself at Prime Minister's Questions, but did not answer a question about who made the first, initial payment.

Sky News' Deputy Political Editor Sam Coates has the story.

SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews

Follow us on Twitter: https://twitter.com/skynews

Like us on Facebook: https://www.facebook.com/skynews

Follow us on Instagram: https://www.instagram.com/skynews

For more content go to http://news.sky.com and download our apps:

Apple: https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8

Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GB

Sky News videos are now available in Spanish here/Los video de Sky News están disponibles en español aquí https://www.youtube.com/channel/UCzG5BnqHO8oNlrPDW9CYJog