Originally Posted by Mats

Thank you all for your insights.
I am in first class.
Fortunately, the trip is not until May, so I will keep my eyes out for a schedule change.
In the event that the status quo persists, I'll likely pay up for Five Star. It's not a guarantee, but what if the Heathrow flight departs from the TBIT?

If things change on the day of travel, I can always do a same day confirmed for the first segment.