Wherever it is, it's an Orca (A310). N707ZS, treadigraph is right about the main gear bogie (sorry, "truck") angle being genuine. Never did understand why, so unlike the VC10, the forward wheels hang slightly below the rears. But it seems to work fine - you can still grease them on.
Having done time in both types (not at White Waltham!), and loved them both, perhaps I can say that the "Ten" looks the prettier by a street, gear or no gear...