On 15. i. 1929 Dr Sowden, the Medical Officer of Health for the Borough of St Pancras, notified the Worshipful Company of Fishmongers that nine (9)cases of enteric fever had occurred in his borough during the last week in December, 1928; and that the individuals infected had all consumed winkles purchased on Sundays during November and December from local stall-holders who in turn had obtained them from Messrs Baxter and Sons of Billingsgate Market on the preceding Saturdays, and (so they stated) boiled them on Sunday mornings in preparation for sale that day.