The following helicopter were seen flying during (non-aviation) visit to the city of Londen:
1x R.44
1x EC.135 Metropolitan Police
ZJ268/68 Squirrel HT.1 RAF / DHFS
G-VONH AS.355F-2 Premier Aviation
G-IVJM A.109E Kingfisher Airlines
The AS.355 had some equipment at it's fusselage. See this picture: http://hoebers.fotopic.net/p67192472.html. Does anyone know what (purple) equipment this is ?