LewisJames Lewis , 22 , stormed into Co-op and brandished knife at shop workers . CCTV footage shows him demanding cash and leaping over the counter . Two PCSOs arrived and one chased him using a metal basket as a shield . Bungling robber then tripped over crates of cakes and was Tasered by PC . He pleaded guilty to attempted robbery and has been jailed for three years . Officers arrived quickly because James Lewis ' concerned father had called police .
James Lewis , 22 , stormed into Co-op and brandished knife at shop workers . CCTV footage shows him demanding cash and leaping over the counter . Two PCSOs arrived and one chased him using a metal basket as a shield . Bungling robber then tripped over crates of cakes and was Tasered by PC . He pleaded guilty to attempted robbery and has been jailed for three years . Officers arrived quickly because Lewis ' concerned father had called police .