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Had a look and it's hard to tell. There are some triangular shaped jobbas over the top which I'd assume are cowls but whether there are caps as well I can't really tell.
@Brommers I suspect those are both possibilities as well. I was thinking the capping was more likely as the damp appears to start at ground level whereas if it was leaking through I'd expect to see damp upstairs too.
Need to try and work out the easiest way to find out.
Possible - go outside and see if there's cowl or caps fitted