"(2) A tribunal may, on the application of a party .... (a) require the attendance of any person, including a party, wherever such a person may be within Great Britain, ....
"(5) Where a requirement has been imposed under paragraph .... (2) .... (a) .... (b) on a person other than the party (and this would of course apply to Mr Hyde)
"We are quite clear that tribunals have a discretion in deciding whether or not to issue witness orders. There is no automatic right to witness orders. But that discretion must be exercised judicially and it must be exercised with due regard to the fact that a tribunal is dealing with litigants in person who may not have the benefit of any advice.