St Pancras International
You’ll find a 24-hour Click & Park on Pancras Road, just outside the London congestion charging zone. Use the postcode N1C 4QP to find it with your satnav.
stpancras.com/parking
 
Paris Gare du Nord
There are two Vinci car parks near Paris Gare du Nord – one on Rue Ambroise Paré and another on Boulevard de la Chapelle.
 
Brussels-Midi/Zuid
There are 2 car parks near Brussels Midi:
Q Park right beside Brussels-Midi/Zuid, on Frankrijkstraat (Rue de France) - https://www.q-park.be/fr-be/ [in French/Dutch]
Parking Gare du Midi 2 on Rue Bara - https://www.parking-midi2.be/
 
Lille Europe
You’ll find two Indigo Park car parks at Lille Europe – one on Avenue de Cologne, the other on Boulevard de Turin.
https://fr.parkindigo.com/parkings-france/lille