Share the complete UK pickup and Barcelona-area destination, including any access instructions or agreed meeting point. If Barcelona is an intermediate stop rather than the final address, include the onward destination now; the route and quotation need to reflect the whole planned journey rather than an assumed city-centre drop-off.
Before the date is discussed, provide the number of passengers, pets, luggage items and the pet’s usual travel setup. Mention any feeding, medication, mobility or rest needs that may affect how the journey is planned. A long road itinerary needs a practical arrival window, not a promised duration, because addresses, road conditions, stops and crossing availability can vary.
The Barcelona-to-London page covers the reverse direction. For a shorter France-bound itinerary where Calais is the destination, compare the London-to-Calais route.