Jeremy Leaf, a spokesman for the Royal Institute of Chartered Surveyors, said: "As parents focus on specific schools which have been performing well, it's almost as if they've become second-tier private schools. It's now got to the stage where parents are renting in areas around these primary schools in north London, or in some cases using a grandmother's address, in order to get their children into these schools. I first started hearing about this practice happening a few years ago and it has been brought up several times since. I remember one specific case in which a certain school had one address for a pupil's parents and all relevant correspondence was going to that address. It was only discovered to be false when the child denied categorically that that was where he lived."