Mains HE boiler help

[Chwaymark]

Hi,

I’m struggling to locate the stopcock in my flat and I need to isolate the boiler so I can swap a bath tap over. Can I isolate it from the water feed on one of the inlets on my boiler? I’ve attached a pic. It’s a Main Combi 24 HE.
All my cold taps can be isolated individually but my hot taps can’t be (typical) so any help is appreciated!

 

[snowhead]

The circled valve will stop Cold into the boiler, as a result no hot out.
Main stop tap maybe boxed in below boiler.

 

[Chwaymark1]

I’ve checked behind the panel and no joy. So if I turn that valve then no water coming at me while I swap the tap. Thanks for your help!

 

[ShaunCorbs]

Wouldn’t turn the boiler one off as chances are it will leak afterwards and it won’t turn the cold off

under the kitchen sink ? Downstairs toilet ?

 

[Chwaymark1]

Nothing under the sink and no downstairs access. I can turn it off at the mains outside but was hoping to just isolate the boiler

 

[Chwaymark]

There’s nothing under the sink and no obvious access panel. I can turn it off at the mains outside I was just hoping to isolate it locally