Hey guys I've come into contact with a Document which states basically a few rules and regulations. It's extremely boring but for those that are curious to know if their mods are legal or not this is a small bit of info. Didn't find much on intakes, turbo and typical things, it basically all wraps around the idea that the vehicle should be left manufacturers standard. But that's boring! Who wants to do that!? Pretty much just a FYI thread for reference. Any other newer or more detailed rules or regulations you know of or can find, feel free to add!
Road Traffic (Vehicle Standards) Regulations 2002 and
Road Traffic (Vehicle Standards) Rules 2002.
Have a read of that, I had a glance and (it was really boring) and didn't find anything specific on POD's other than they don't seem to like a vehicle modified from manufactures standards or alternatively download the PDF
RoadTrfcVhleStand&.pdf and
RoadTrfcVhleStand&.pdf
Hope it helps, or provides use in any way