Are you sure this one is for ThomsonFly? That the livery matches ThomsonFly’s does not mean much. It could also be for another airline in the TUI holding. I know that ArkeFly, JetairFly and TuiFly Nordic are also due to get 787s.

As above mentioned, the first Dreamliner for the TUI group is for Thomson being G-TUIA, also I believe that the first one to be delivered to them will be G-TUIB. think they will get 4 in total this year all for the UK before the others find there way to the other members of the TUI group.