Ultan,
Wasn't singling the navvies out as being tax dodgers - we've all.... s**t, there might be a tax man in the vicinity.
My first job when moved to London was on the site of the London Business College at the end of Baker Street near Regents Park.
Every Thursday half the site would empty out; the men would climb down the ladder, go into the hut and shortly afterwards emerge dressed in collar and ties and make their way to the dole ofice over the road.
Jim Carroll