I agree, Ian W - it is concerning. Perhaps "787" and "fire" have a ?temporary? extra weighting in the contingency plan
(
http://www.pprune.org/jet-blast/518987-lhr-r-t.html.) As far as I can see, reducing to single runway landings only, and letting the Airfix kit burn out if need be (since it was empty and on a remote stand) would have been a more acceptable solution.
A salutary lesson to those enthused by the "2 runways, nice day, no div" mantra beloved by EASA and accountants to do what NoD does and I did and have 'something up your sleeve'?