Been doing the math. KO 5:30, HT 6:17 (assume 2 mins added on). 2nd Half KO 6:32, final whistle 7:21 (4 mins added on). Get back to car 7:31. Get back to pick missus up 8:01 (pushing it). Quick wash and change. Leave 8:20. Arena car park for 8:40. In seat for 8:50. Killers start 9:00 (miss support band but never heard of her to be honest).
It's tight but not impossible. I might even do it if I leave early (despite the wrath of my fellow Blades).
Now - all I need is to convince the missus it'll all work smoothly on the night