I think some of you need to put this into respective And calm your excitement.
The TUI Barbados flight was a divert due to the LGW drone incident. It wasn’t a proving flight for LTN 787 longhaul ops. TUI are more than knowledgeable on what their 787 can do and from where. All TUI’s eggs are in one basket. That basket is called LGW so I’d stop getting over excited and get a grip on reality. They won’t be launching 787 longhaul flights from LTN any time soon due to an unscheduled divert that happened yesterday. End of.