John Rentoul has been collecting these for years - he's nearly up to 1000.
http://blogs.independent.co.uk/2013/05/07/has-the-internet-killed-the-loch-ness-monster/

I'm not even sure that they did take it to the Mail. They gave an interview to the local paper and I get the impression that the Mail hacks just wrote it up from that (with some embellishments)

Er... except this story is inaccurate. I live in the same village (Sawston) as Sasha and his family, and the only surprise to me was that his gender was a secret for the past 5 years. I hardly know him, but always knew he was a boy. They even told my wife that Sasha is short for Alexander.

But it makes a good story for the Mail and Telegraph!