By the looks of it not that up to date.
Our Viscount most definately isn’t laid out like that at the moment and hasn’t been for a long time now.
http://maps.google.com/maps?f=q&hl=en&geocode=&q=sg19+1pu&ie=UTF8&ll=52.114152,-0.319532&spn=0.001018,0.002414&t=k&z=18&om=0
Midland Air Museums changed a bit since the picture was taken. Sea Vixen no longer has wings folded, Meteor NF14 has had two repaints since and we now have buildings where the Electra’s are sat near the museums boundary fence.
http://maps.google.com/maps?f=q&hl=en&geocode=&q=sg19+1pu&ie=UTF8&ll=52.114152,-0.319532&spn=0.001018,0.002414&t=k&z=18&om=0