That to me looks like a gas pipe, I have something similar to that joint in my understairs cupboard. (The installation up to the meter here is prehistoric but National Grid wont touch it until it starts to leak.... )
Possible though the gas system has been upgraded/replaced and that steel pipe used to thread a smaller plastic service pipe through from the road up to house, known as an 'insertion'.
Hopefully if the OP has cut through then he's found the plastic inside and left that intact!
Possible though the gas system has been upgraded/replaced and that steel pipe used to thread a smaller plastic service pipe through from the road up to house, known as an 'insertion'.
Hopefully if the OP has cut through then he's found the plastic inside and left that intact!