Sir - The Oxford Union asking David Irving and Nick Griffin to speak on the limits of free speech is a bit like putting two sharks in charge of a swimming pool.

Both men have gone out of their way to expose their crass simian idiocy to the world, and aren't fit to discuss anything important, least of all responsible free speech.

As when Hitler was elected Chancellor, Oxford student democracy seems to have gone somewhat awry, or perhaps its students are simply too young to appreciate what Holocaust denial truly means to the survivors of the death camps.

Daniel Emlyn-Jones, Oxford