I'm unsure what the EGKB vis was last night at 2030 but from the position of the G3 off the runway( seen from FL90 today) and assuming it was a runway 03 departure I suspect this may have occurred.
Taxied from the Exec jet base down r/w 29 Westwards,lined up not on the 03 centreline but commenced it's take-off run lined up on the right hand painted white runway edge lines and then ran onto the very waterlogged grass .....yawing rapidly to the right and collapsing the nose gear.
Something similar occurred many years ago to an Air Anglia F27 at ABZ which had the QRA apron adjacent to the runway threshold.