Where is the filling loop for my boiler?

[JWQ]

Hello everyone. It would be a great help if you could help me find the filling loop for my boiler, so I can re-pressurize the boiler. I bled my radiators the other day, and the next day the central heating no longer worked.

I've posted some photos of the airing cupboard and under the kitchen sink. Any suggestions would be appreciated.

In the airing cupboard - Part 1:

 

[CBW]

The two valves attached with a flexible hose on this picture

 

[JWQ]

I guess it's the braided tube in the picture below, and in the last picture from the last post, but I don't know. It could be that I have to connect a filling loop elsewhere?


Part 2

Kitchen sink

 

[JWQ]

The two valves attached with a flexible hose on this picture

View attachment 223210

Thanks for your quick reply!