I suspect there is little truth in this particular rumour.
For the moment!
It is however widely reported, that 'Skippy' sees no reason to maintain a BA presence in the UK regions, unless it makes a profit.
At this time, I believe, it does not.
And Carnage
The previous poster is of course correct. Mainline have retained (I think) all LHR feeder traffic - Currently shared of course with Titan!