Blocked Drains

[Furryhobnob]

Had a rough week with the missus getting admitted nearly a week ago with a burst appendix, and shes had to have further surhery since and we've now missed a family holiday to corfu.
Anyhow went to get in the car this morning to be greeted by a swimming pool in the drivers footwell, didn't have time to investigate as i was on the way to the hospital so used another car.
Just got home so will have to have a look tomorrow, any advise as to which drains to check please