More on road closures and possible jams. I went to dogs trust (Honiley) yesterday and noticed a lot of warning signs up in the Balsall common area.
Dave -the website giving route is
https://www.velobirmingham.com/
The route is in there somewhere .
that route does bypass Fillongley, but there's Smart motorway road works with the inevitable problems from somewhere like Corley services to J2. The M42 & M40 south will take you to the large junction outside warwick ( J15) .A452 will take you to B4100 , or alternatively carry on M42 to J13 . Fosse way is a B road, but it's a nice drive.