Stopcock in airing cupboard?

[SamTylersJacket]

My family and I live in a bungalow, we have lived there for nearly five years. The property was built in 1964. I want to turn off the water supply so I can install a washing machine, the other place where we lived had modern fittings at the back of the washing machine to stop the water.
We cannot find the stopcock in the kitchen, we have looked under the sink and cupboards. , There is an old boiler in the airing cupboard, on the top there is a big black round handle, I sure this for the hot water, right at the bottom there is what I think might be the stopcock.
Here is a couple of pictures of the tape/pipe in the airing cupboard.

 

[Laurieo]

What happens when you turn it off ?.

 

[SamTylersJacket]

I have not turned it off as I'm not sure if it is a stopcock.

 

[SamTylersJacket]

 

[SamTylersJacket]

I'm not too sure as I'm not a plummer.

 

[denso13]

Bottom right looks like the stopcock. Turn it off and see what happens.

 

[SamTylersJacket]

OK Thanks, I will check it out later as I'll be on afternoon shift.

 

[SamTylersJacket]

Unfortunately I turned this stopcock clockwise and also anti-clockwise and it made to difference to turning off the water.

 

[SamTylersJacket]

I have looked under the kitchen sink and right under the unit and nothing to turn off the water.

 

[CBW]

Unfortunately I turned this stopcock clockwise and also anti-clockwise and it made to difference to turning off the water.

How far did you turn it clockwise? Should be until you feel resistance.

 

[SamTylersJacket]

I turned it until it could not turn anymore, plus water slightly leaked, when I fully turned anti-clockwise, the water from that pipe stopped leaking.

 

[CBW]

I turned it until it could not turn anymore, plus water slightly leaked, when I fully turned anti-clockwise, the water from that pipe stopped leaking.

Ok, so there’s a leak on the gland nut too. Did you notice a reduction in flow rate from the cold taps?

 

[SamTylersJacket]

No reduction of flow from the cold taps.

 

[CBW]

Definitely looks like the stopcock. Might just have no washer. Can you turn off outside?

 

[SamTylersJacket]

I don't know where to turn off outside.