It makes perfect sense. To the north of the field there are a dozen houses if that for around 6-7 miles, allowing any aircraft to climb suffieciently to reduce the noise impact. To the south is the town of Bawtry ... hence the preference for 02 departures. It is quite common for an airport to use a runway even with a small tailwind, even LCY use approached over the city with a tailwind below around 5 knots!
Of course, if it is busy both go the same way ... i would have thought was to to be taken as read ....
The threshold displacement. This means, that rather than the threshold (the piano keys if you like) being at the end of the runway as you would expect, they will be moved further along the runway ... which is when you get the arrows at the start, then the piano keys etc. This does not effect take off as you start the take off roll at the start of the concrete, but if means that the landing zone is moved down the runway, so that as the aircraft come over the high ground they are higher and hence the ground is no longer considered to be an obstacle ... hope this makes sense.
Any more for any more?