Why DID Boris Johnson miss Rishi Sunak's Winter Economy Plan?

While his economic chief was explaining the successor to the furlough scheme, Mr Johnson was more than 70 miles away in Northampton at a police training centre, posing for pictures in squad cars. https://www.dailymail.co.uk/news/article-8769313/So-DID-Boris-miss-Rishis-Budget-replacing-Winter-Plan-pose-police-cars.html?ns_mchannel=rss&ns_campaign=1490&ito=1490