What happened to the M24? We have the M23 and the M25 in Surrey, so where is our 'missing motorway'?

Surrey is home, in part, to both the M23 and, of course, the infamous M25 - so why isn't there an M24? Here are some thoughts

from getsurrey - News http://www.getsurrey.co.uk/news/local-news/what-happened-m24-m23-m25-12659462