"Dave Arquati" wrote

The only student discounts available in London are on weekly or longer
bus passes and travelcards (only available to those studying in London)
or the Young Person's Railcard discount on all-zone one-day Travelcards.

Neither of these are probably any use to him, especially if it's only a
days' visit. He'd be best off just getting a normal Travelcard; if he
already has a YP Railcard then he can use that to obtain a discount but
there's no point getting one (for £20) if he doesn't already have it.

--

Thank you Dave. That was what I suspected, but wanted confirmed.

cheers

Vernon