main isolation valve

[damo123]

hi
i im getting confused i recently got a combi boiler installed to replace a water tank which i no longer have, the problem im having is the isolation valve only stops kiching cold tap and nothing else, i think ive found the main water supply coming into the house but its already joined to the isolation valve.
not sure if im missing something but i want too isolate all water from one tap
thanks Damian

 

[WC1]

There's usually a stop tap in the street.

 

[damo123]

a couple of photos

There's usually a stop tap in the street.

yea i know what you mean, i just want too install a stopcock from inside my house, the old stopcock in the picture use too stop everything, not sure why it doesnt anymore
thanks

 

[WC1]

The one with the red handle?

 

[damo123]

The one with the red handle?

yea now it only stops kiching taps