Sorry to take so long to get back to you all. I've been out for a long walk. But now I will reveal all. The answer was, of course, ignorant. This was back in the 1970's and at that time he probably only came across vegetarians infrequently. He wasn't tight-arsed, however, as when a truly vegetarian pizza was finally produced he didn't charge for it. Which only goes to show something or other important.
(drums fingers on table for a bit)
Ah yes, I remember what it was. It's all too easy to fling accusations around implying motive behind actions. Cricket teams may be very competitive, so much so that they fail to provide halal meat sarnies so as to unsettle their opponents. Or they may be ignorant. Or they may object to the Islamic halal animal killing practices. Or they may be racist or antagonists of a particular religion. Or something else.
I'm not trying to defend anyone's actions here, just objecting to the demands of religion on everybody else. Would you expect a vegan restaurant to produce meat or dairy based nutrition when asked? Would a Muslim chef be expected to produce non-halal pasties for a cricket team from Cornwall who objected to Islamic ritual slaughter?