When did this livery appear ?

Howdy,
Just scanning through some of my past photo visits from Manchester and discovered this from a couple of weeks ago.

Its a Blue Peter painted BA 757 as you can obviously tell !

Question is…. When was that done ? Have I just been oblivious to it in the past.

Dont you think that the BA colours somehow dont look right without that dark blue band around the lower body. Could be sort of BABaby save on paint refinement ? (without the Blue Peter bit that is !)

Cheers
G.