Dead/Flat battery Toyota Yaris + Portable chargers

[Burnerman]

Yep, everything off except the ignition, 2nd gear as per Peter and drop the clutch smartly.
I'd give you a shove but Surrey is a bit far
John

 

[Spark123]

If there isn't enough juice for the immobiliser it may not bump start, providing of course if it has an immobiliser.