Since this thread was started Scottish law has changed, this does raise a question, if I hire a caravan in Wales and take it to Scotland would I need to have it inspected by some one complying with Scottish regulations, or would Welsh and English caravans be exempt from the new regulations in Scotland covering EICR for premises with tenants, or is the fact it's on wheels mean it does not come under the new rules?
I will read regulations for where I live, but not for places where I don't. So I have no idea how the new Scottish regulations are worded, since at the moment we are still in the EEC then I would say if OK in country of origin then must be allowed after crossing boarders.
In my own little caravan the consumer unit is prone to shaking loose, before connecting up I do check, also easy for bedding to shift during travelling again stopping ventilation from consumer unit which also has the 12 volt power supply built in. So it needs testing after it arrives on site. So what is really the point? You can do all the testing you want, and it is all invalid as soon as you move to another site. Best you can do is a plug in tester.