It's starting to look as if this story may have some mileage in it beyond the odd token resignation.
Why does a property developer donate £400,000 to the Labour Party and wish to remain anonymous? Why is there so little curiosity about people of apparently modest means, the intermediaries, donating huge sums?
Could the answer have anything to do with Durham Green Developments, a planning application for which was blocked, but was suddenly unblocked last October?
Guy Fawkes' blog of parliamentary plots, rumours and conspiracy: What Does a Property Developer Secretly Buy for £400,000?