Not wanting to pour fuel on the fire, but a quote from Rules of the Air 2007;
Landing and take-off
14
(4) Subject to paragraph (5) a flying machine shall move clear of the landing area as soon as it is possible to do so after landing.
(5) Paragraphs (2) and (4) shall not apply if the air traffic control unit at the aerodrome otherwise authorises the flying machine or glider.
Seem to remember this is one of the first things you learn as a PPL. You land, you exit ASAP.