GAS!
So my mate bought his new, old, house and within seconds of the removal firm asking for a tea the smell of gas was overwhelming.
Yup, they had taken the gas cooker/stove and just cut the pipe which was now open ended.
Laws around gas and safety are old and quite draconian it appears. The gas was turned off, the repairs safely made and the previous owner was tole he was a very naughty boy. That and the cost, the slap on the wrist and a fine. He could have even been jailed apparently.
Gas, such fun.
This was many years back now but I understand gas is still, I think rightly, very heavily regulated.