“… not “hard-edged” and call for evaluation on matters of degree and opinion: see e.g. R v Monopolies and Mergers Commission, ex p. South Yorkshire Transport Ltd [1993] 1 WLR 23, at 32 (Lord Mustill). In that case the statutory formula which had to be applied was whether an area was a “substantial part” of the United Kingdom. That was …”
“…riterion. The distinction is clearly made by Lord Mustill in R v Monopolies and Mergers Commission, ex parte South Yorkshire Transport Ltd [1993] 1 All ER 289, [1993] 1 WLR 23 at p 32 of the latter report.”…”