[booms]

We've used this one in the past:

The Company of Animals Clix Carsafe In-Car Safety Harness For Dogs,Medium: Amazon.co.uk: Pet Supplies

Free delivery and returns on eligible orders. Buy The Company of Animals Clix Carsafe In-Car Safety Harness For Dogs, Medium at Amazon UK.

www.amazon.co.uk

A nice thing about it is that (not sure if this is obvious in the picture), its belt is made of two straps, so you can pull your existing car seat belt through that and connect it to the socket. As in, you don't have to rely on the product's connector fitting correctly. Does that make sense?

Mind you, it fitted just fine in a Zoe.

 

[booms]

Cheers for that. Are you saying that the buckle clunk clicked fine into the Zoe seatbelt plug, so no need to use the existing seatbelt?

That would also be useful to know as we also have a Zoe which will be the main run around car for the dog. Will only in the M3 for the long distance journeys.

Yup, exactly. With the Zoe you definitely have both options - plug the harness directly into the socket, or thread it through the existing seat belt. Works great.

 

[booms]

Yup, exactly. With the Zoe you definitely have both options - plug the harness directly into the socket, or thread it through the existing seat belt. Works great.

Oh, and you can use this just as a normal harness when you're out and about too which is handy.