Hunting whitebait

Help me, SevenoaksPeople! I'm desperately seeking whitebait to cook at home. Had some lovely breaded whitebait in the Bullfinch, Riverhead recently and it's given me an insatiable hunger for the little fellas. I asked in Batchelor's butchers in Riverhead (if you haven't been, go, it's fantastic - amazing cheese counter and great veg too) but they don't do fish anymore. A customer suggested Polhill, so I may go on a mission there tomorrow... Any other suggestions?