As I recall the Clancy Bros version, it was surely Paddy Clancy
who sang it in full theatrical style, cockney accent an aw'

There seems to be a degree of bowdlerisation of the lyric--- but
it's easily re-constructed.

'...some high-society bugger wants a pipeline to 'is shitter...'

'...he'll dress up in his sheet an' 'ant that shit-house seat...'

It also appears to have some union connections, being as the
alternative title is 'A British Workman's Grave' and the final
bit is 'they got what they deserved, 'cuz they had the bloody
nerve, to muck about with a British workman's grave!'