What code drivers licence do I need to drive a 4 ton truck towing a 3 ton food trailer?

Question:

I would like to know what code drivers licence I need to drive a 4-ton truck towing a 3-ton food trailer by law and we can I find this law?

Answer:

The requirements are in regulation 99 of the National Road Traffic Regulations. You require a code EC1 licence for vehicles between 3.5 and 16 tons and the trailer is bigger than 750 kg.