anyone know how to get in a locked berlingo least damage possible

[technaudio]

Please, DO NOT use WD40 in the lock!
Use a proper Lock oil, preferably with PTFE additives.

Really? Whys that then?

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[geoff]

WD40 isn't really a long term lubricant solution for most things as it can wash away the existing lube and after a short time the active ingredients of the WD40 just evaporate away. It is good stuff in the right application.

Many folks also use it as a release oil but it doesn't really work that well for that job, better to use Plus-Gas instead as again it is a case of the right stuff for the job.

In a similar way folks use Copa-slip as a grease / lubricant when it is in fact an anti seize compound with little lubrication properties.

[bikergraham]

Please, DO NOT use WD40 in the lock!
Use a proper Lock oil, preferably with PTFE additives.

Really? Whys that then?

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Polytetrafluoroethyl  .Thats the stuff to use. Use wd40 for freeing only ,not recommended as a long term lubricant !

[Gadgetman]

I just had to mention it as until now I was unaware that people actually used WD40 on locks.
You see, at this time of year here in Norway, EVERY gas station and car accessory shop has a stand next to the counter where they sell 'lock de-icer', lock oil, silicone lubricant(some kind of bottle with a sponge) to rub on rubber seals, and sometimes even silicone sprays.(Because the rub-on stuff is crap)
I keep a de-icer spray in my jacket pocket all through the winter, and have a bottle of lock-oil in the car, so that I can apply it as soon as possible if I had to use the de-icer. (I've had to use the 'plastic bag filled with hot water' to unfreeze a lock once or twice, years ago, so I'm careful to do it right.)