‘Where a claimant has received compensation from… (b) an insurer under an insurance agreement or arrangement, or (c) any other source… MIB may deduct… an amount equal to that compensation.’
“23. He held that the answer to the first question was in the negative. For present purposes it is his approach to the second question which is of interest. He said this at page 552:- On behalf of the employer Mr Pannick was disposed to accept, rightly in my view, that this test was not intended to provide the answer to every category of case. The words ‘is included among’ in paragraph [20] make this clear enough. Nevertheless, at least in a case of the same general type as FOSTER the court’s formulation must always be the starting point and will usually be the finishing point. If all the factors identified by the court are present it is likely to require something very unusual to produce the result that an entity is not to be identified with the state. Conversely, although the absence of a factor will not necessarily be fatal, it will need the addition of something else not contemplated by the formula, before the principle in MARSHALL’S case . . . has a prospect of being brought into play.”