Virgin expansion at Heathrow is somewhat limited by their finite number of slots. In fact they rarely expand at Heathrow, as in the past they have tended to drop a route when introducing a new one!
Funny how they used to manage to fill several 747s a day from Gatwick without all the connectivity they now talk about at Heathrow. I expect quite a few passengers did 'connect' in a way to their flights from Gatwick
using other carriers such as easyjet.
With an expanding fleet and limited potential at Heathrow I suspect Gatwick will have to be revisited sometime in the future.
Even with all this connectivity at Heathrow they still find it difficult to be profitable.
I remain hopeful that Cathay will return as they recover to pre-covid levels of capacity.
As for Westjet, dropping Toronto from Gatwick was not the best of moves. Air Transat have reaped the benefits there. The BA summer seasonal to Vancouver was also successful and is returning in 2024 with a longer season.