The photo looks like it could have been taken in Satellite 3 at the very end where the building is single story with only 5/6 gates, the remaining part of Satellite 3 is on the upper floor and doesn't look anything like this and is rather pleasant and totally glazed giving great views overlooking the aprons.
Although it's looks cheap in this view it was built for the use of Ryanair and the shops, cafes are on the upper floor.
I think even this view was it looks far superior than the bland cheap looking gates we've see at LTN.