I remember the Crown in Northolt Village being a Watney's pub. It was my local so I became quite used to the Watney range of bitter beers.
Most advertised was their keg biter, Red Barrel. We thought it was all right but a bit gassy and expensive. It was dispensed from an aluminium keg, the beer being pressurised. Much more traditional and acceptable (and less expensive) was Watney's Special, hand pumped from traditional wooden barrels. Not as good as Young's Special but quite acceptable. Years later, for some unaccountable reason Watney's introduced their "beer of the future", Starlight. Out of loyalty to my future brother-in-law (Gerry Nelson appeared on the advertising hoardings throughout Watney's territory), I tried a few pints. I soon realised there was no point in drinking this innocuous brew which, if consumed in quantity, could fill the belly, generally have little effect on ones mental state or powers of concentration but could induce physical discomfort and withrawal symptons. We found out later that Starlight was drawn from the Thames at Mortlake and hosed into containers for distribution without further treatment.