Thanks for the latest replies, especially the last two.
We do not have a water meter fitted. As I say the stop cock is the original one fitted in about 1939. With a bit of WD40 and the stop cock key, hopefully after a good soaking with oil I may be able to turn it.
Opening it up a bit more would that increase the water flow into the house ? As mentioned mains plastic pipes were installed 2-3 yrs back, and that is when our low water pressure problem began.
We do not have a water meter fitted. As I say the stop cock is the original one fitted in about 1939. With a bit of WD40 and the stop cock key, hopefully after a good soaking with oil I may be able to turn it.
Opening it up a bit more would that increase the water flow into the house ? As mentioned mains plastic pipes were installed 2-3 yrs back, and that is when our low water pressure problem began.