Air Gregory & 'The Copter Kids'
Savoia
A review of the footage on You Tube reveals that the Allouette was G-BBJE (registered owner Medminster Ltd) and Hughes G-AZVM (regn to Air Gregory).
The footage of the B47 only shows blurred images of the regn so an ID was not possible but it's colour scheme is most yellow and there is a name on the fuel tanks that might be Autair, but that might be totally wrong.
The film seems to recycle the same flypast taken from different angles several times and the premise is that the helicopter are surveying for oil hence the underslung loads. Interestingly the Chief Pilot and the kids father is played by Derek Fouldes (Bernard from Yes Minister).