The FT's Katie Martin explains what to watch for in the markets on Monday, including the pound sliding and FTSE 100 gaining following Theresa May's announcement of a timeline for Brexit and hinting at a hard exit plan.<br /><br />► Subscribe to the Financial Times on YouTube: http://bit.ly/FTimeSubs<br /><br />For more video content from the Financial Times, visit http://www.FT.com/video<br /><br /><br />Twitter https://twitter.com/ftvideo<br />Facebook https://www.facebook.com/financialtimes
