Mark Croucher - also known as Balding Friar Tuck
In what capacity we are not certain, possibly his silence is simply being paid for. Infamously, in his guise of Winball Pizard, Croucher's e-mail address was the destination of some stolen documents passed on by the notorious Jon Ison, a paid assistant of Paul Nuttall. This is believed to be the subject of an ongoing police investigation, so we will say no more at this stage.
You may recall that Mr Croucher and UKIP still owe a substantial amount of money to GLW after they lost a court case against him in 2010. LINK. We have, of course, passed on our information to GLW and his legal team.