15
1
The dopey robber didn't bother to cover his face when he first peered inside the bank in Broad Street, Teddington - but returned a short while later wearing a balaclava.
CCTV footage of his brazen crime sees him approach the counter, pull a gun from a blue plastic bag and demand the staff hand over money.
Moments later, a passer-by saw what was happening and fearlessly jumped inside, trying to wrestle him into a tight lock.
But the gunman managed to wriggle free and flee on a motorbike.