It is important to note that there is no right to land at a non designated port of entry. The police, immigration and special branch very sensibly allow it to avoid a zillion light aircraft turning up at Bournemouth and Liverpool etc. every sunday afternoon.
We are all wise to take this privilege seriously and be good boys and girls in following procedure with Gendec etc. as well as reporting the scrotes who abuse it if we get to know about them.
I have been ramp checked a number of times in the past, but not recently and I take this to imply that my regular patterns of travel are now known to the powers that be and that they've satisfied themselves that I'm an upright cirizen. But anything out of the ordinary I'd expect a visit.