The new LHR to Barbados flights from VS are scheduled flights but are also being made available in cooperation with P&O Cruises who are offering their passengers that are joining their cruises in Barbados on the Britannia and Ventura a LHR departure for the first time on a scheduled airline along with their current LGW and regional departure points using charter flights operated by TUI.
This new addition to the VS network from LHR does not mean the gradual erosion of LGW operations as VS has available slots at LHR to accommodate the extra flights to Barbados which is a premier destination that can operate in conjunction with LGW.
I think it's a good move by VS to open up LHR to Barbados and with the commitment of P&O Cruises this new seasonal route will be a success.