Thanks BN new one one me. I'll look it up when next in Blighty. Is it available in London?
Tube, a shandy is a shandy, many's the novice was blooded with a shandy. As for Guinness & black I know of only one person who drinks this and she rarely breaks out. The lager-top is/was a regular call from the regular lager drinker and was designed to take away the shapness of the lager. Castlemaine xxxx, now there's a drink. Fullers brought out a particularly nasty one about 20 years ago called K2, vile (showing my age)