This from Bloomberg:-
Jan. 16 (Bloomberg) -- The helicopter that crashed in
central London this morning is understood to have diverted from
its flight path due to poor weather, according to controllers at
Redhill Aerodrome, from where the flight departed.
The aircraft involved was an AW109 built by the
AgustaWestland unit of Italy’s Finmeccanica SpA, Phil Wright,
senior air traffic controller at Redhill, south of London, said
in a telephone interview.
Redhill is a base for AW109 operator Rotormotion, which is
preparing a joint comment with the aerodrome, Wright said.
Today’s flight was due to have operated to Elstree, west of
London.