According to Thomsons it's got wider aisles and wider seats
I read this sunaddict - but it is completely mathematically impossible in Thomson economy class where the majority of seats are located. 767 is 4.72m wide, 787 is 5.49m wide.
(Unless Thomson have somehow managed to fit some seats into an alternate dimension or have built a Tardis!).
Maybe they are talking Premium - which is 2-3-2- it is probably possible there.
The interior dimensions of 787 and 767 plans are easily available on the net - try wikipedia for example or Boeings own site. Dividing by 7 or dividing by 9 gives the obvious results.
For folk who travel economy I am now convinced that Thomson advertising are being economical with the truth. Those people who use economy class on Thomson First Choice 767 planes MUST have a reduction in either seat width, or aisle width - or more probably BOTH - when they switch to the 787 Dreamliner.
And I believe it's wrong of Thomson to suggest otherwise.