I’ve been looking into this.
We’ve just had a kitchen fitted, and there were masses of pallets outside Howdens…I think you could go and ask them and they’ll let you fill your car.
I did a bit of research and you shouldn’t just take any old pallet, some are unsafe to use due to the way they’ve been treated. Some may have been treated using Methyl Bromide. Pallets should have an IPPC logo which will tell you whether it’s been heat treated or treated using methyl bromide.
The image below is an IPPC stamp on a pallet, the ‘MB’ bit means it was treated with methyl bromide;
Apparently it has been phased out, but you should do a bit of research to understand what the IPPC stamps mean.
Also, if the pallet looks like it’s been stained by a spillage don’t get it…you don’t know what was spilled on it.