Once upon a business trip north of Watford Gap, my colleague and I stopped for refreshment. He asked, with apologetic politeness, if he might (as a heathen Southerner) have his beer served without the use of a sparkler. "Certainly Sir" said the landlord, "but I'll have to go and find a regular pint glass - the normal ones are oversized."

Incidentally one of my collection of tankards holds 25 fluid oz - we call it the "Yorkshire Pint" one.