Yes, he was flying within CAA regulations. Read this for further clarification
http://www.caa.co.uk/docs/224/Rule%2...il%202005a.pdf
3(a)(ii) is where you want to read.
Can I ask why, instead of walking over to the hotel, and asking to chat to the pilot to establish if there is maybe a better entry/exit path to the landing site, you are asking the question here?
Also, you seem very, very sure of your heights. Something thats been proven to be very difficult to judge if not trained in the same. Could you be wrong?
Seems more than a little 'off', frankly, to pursue it here rather than the gentlemans way of face to face over a malt.