A couple of years ago, I did a VFR trip through the SOU zone, North - South, on my way to a circuit of the IOW.
Called North of the zone, and was given a VFR clearance at 3000' (lower may be more of a problem) via SAM VOR and the Needles.
Overhead the SOU runway, we saw a Flybe Dash 8 getting airborne below us. He was held initially at 2000' and to the East of our track until abeam us, then cleared to climb once well ahead and pass across our intended track on his way to ORTAC.
Great service I thought!