Well spotted, Paul. The one arrested in 2007 was the Saint Jacques II. She and the Nicolas Jeremy are both Boulogne stern trawlers and do appear to be sister ships.
A Google shows that Saint Jacques II was also involved in a collision in the Dover Strait in 2001 whilst contravening the traffic regulations in the Southwest Lane.The MAIB report below shows that the coastguard tug Anglian Monarch , and the coastguard fixed wing aircraft, were both tasked to deal with this incident. Both have of course been cut by the present government and there are further massive cuts planned in the Coastguard service. All very shortsighted in my view
http://www.maib.gov.uk/cms_resources.cfm?file=/gudermes-saint-jacques.pdf