Jersey Airlines were a Heron Operator.
Ah, Heron operators - a breed apart.. Let's see how many of these names (by no means all DH114 operators) ring a bell..
North South.
Overseas Air Transport
Metropolitan
McDonald
Mercury
Morton
Peters
Progressive
Silver City
South Coast
Tyne Tees
Cambrian
Channel
Dragon
Emerald
Executive Air
Fairflight
British Eagle
British Island
British Westpoint