While you can reasonably be deemed "in charge" of your camper van, if you're seen climbing into the living area with the clear intention of bedding down for the night, or are knocked awake by the police and then breathalysed, you would have a very good argument that there was no likelihood of your driving the vehicle, and therefore you would have a defence against the charge.
If, on the other hand, you climbed into the drivers seat and started the engine so you could turn on the heaters and put the radio on for a bit while you had your evening cocoa, you'd have a rather more difficult hill to climb.
If you make a habit of sleeping somewhere other than a recognised camp site, it would probably be worth your while keeping a couple of those £2 disposable breathalysers from Halfords in the glove box. Not only will it prevent you from accidentally driving while still over the limit the next day, but if you are challenged by the police while you're still drunk, it allows you to demonstrate that you have the means on hand to ensure that you won't be driving before you're fit to do so.
While you can reasonably be deemed "in charge" of your camper van, if you're seen climbing into the living area with the clear intention of bedding down for the night, or are knocked awake by the police and then breathalysed, you would have a very good argument that there was no likelihood of your driving the vehicle, and therefore you would have a defence against the charge.
If, on the other hand, you climbed into the drivers seat and started the engine so you could turn on the heaters and put the radio on for a bit while you had your evening cocoa, you'd have a rather more difficult hill to climb.
If you make a habit of sleeping somewhere other than a recognised camp site, it would probably be worth your while keeping a couple of those £2 disposable breathalysers from Halfords in the glove box. Not only will it prevent you from accidentally driving while still over the limit the next day, but if you are challenged by the police while you're still drunk, it allows you to demonstrate that you have the means on hand to ensure that you won't be driving before you're fit to do so.