From the Cinque Ports Herald 26 Feb 1926 p.3 col.3 (on film Dover ref library):
Many complaints having been made by the tradespeople of this port (Dover) against the intrusion of French bread, flour, beef, pork and other provisions, brought in the passage vessels from France, and which has of late prevailed to such an extent as to be particularly injurious to the trade in general. Strict orders have been issued at the Customs House to seize all articles of this description as they are prohibited to be imported.
We notice in our paper of the 22nd ult that a considerable quantity of tea had been seized on board the French vessel "Charles". Since which the best vigilance has been exerted to prevent this illicit importation of this commodity, with such good effect that the Licensed Tea Dealers have very considerably increased their sale as is fully proved by their returns to the Excise office.
from the Kentish Gazette 13 April 1821:
The Cordwainers residing in Dovor having been for a considerable time much injured in their trade, by the daily importation of French leather, boots and shoes, without payment of the duty, did, a short time since, petition the House of Commons thereon, and the petitioners have since received the advice and support of both the Members for their Port; and on Wednesday last a numerous meeting of the trade took place, when it was determined to take immediate measures against those who have been guilty of the illicit practice.
k.