The BA Ts and Cs of carriage are here:

http://www.britishairways.com/travel...public/en_gb#4

I cannot see that there are any Ts and Cs relating to reversals on BA, but I might have missed something.

I do like the bit where if you die on a trip, then BA might extend your ticket, or is that my pedantic misinterpretation?

If
- a passenger dies during their journey and
- other passengers are travelling in the same party as the dead passenger;
we may decide to do either, or both, of the following.

- We will not enforce any minimum stay conditions which apply to the tickets of members of the party.

- We will extend the validity period of their tickets.

What do you mean that the passenger cannot sit down? Mind you, I have not seen a regulation preventing dead passengers from occupying the exit rows either..... yet.