Thanks for the feedback Hillbilly.
After a bit of research, I'll go for the Redarc tow pro elite as I like the idea of the remote head being easily accessible. I'm thinking of getting an auto elec to fit it to ensure correct wiring and also add an Anderson plug for battery charging of the camper whilst driving. I have a second battery set up with charging outlet in the rear, so will just splice into that for the Anderson plug.
Had the towbar and loom fitted at he dealer from new.
Cheers
Rob