C310 G-FFWD passed over that area at 10000' heading SE just before 9am.
Diamond Twinstar G-DOSB heading ESE just to the NE of Farnborough at 1300' just after 9am - their diesel engines do sound rather odd, fairly high pitched and rather like those fan-powered airships that were around a decade or so back... looks like it went into Blackbushe.