Oh dear.... I think it's time someone submits the error in the airfield being disused on charts? They may put up a notam re:activities at your aerodrome which could prevent such an encounter.
If the plane didn't even know the field was active, then I guess there is no reason for them to even consider traffic following the circuit (even if s/he saw you which from what you're saying s/he probably didn't). But again he shouldn't have been overtaking that close to you.
Glad you lived to tell the tale! I bet you won't ever be in that situation ever again!