Yep. You're right, these are single pole...back to plan A, I think.I think power points in vans need to be double pole. Not sure if they are although they look very good.
I'll plug a dual USB adapter into the third socket in the o/head cupboard for the iPad and iPhone 5 charging cables and after locating the aerial connection to inside the cupboard, run the charger cables thru the old aerial face plate.
May fix today.