Did the UK ever attempt any raids on the French coast during the Napoleonic Wars? I was thinking events somewhat similar to the numerous Allied raids on German-held France in the lead up to the Normandy Landings.
Before they were committed to the Peninsular War, the British did try to do minor invasions of the Netherlands in 1799 and 1807; future Marshal Brune stopped the British in 1799 while disease had killed the British in 1807. These were little more than a few thousand troops, around 30-40 thousand troops involved, but was costly for the British as there was little local support from the Dutch.
Once Napoleon had lost his grip of Spain due to his arrogance and the Portuguese were fully involved in the war against Napoleon, the British stepped in and fully supported the war in Iberia.