In this Part "trade dispute" means a dispute between employers and workers, or between workers and workers, which is connected with one or more of the following matters—
A dispute between a Minister of the Crown and any workers shall, notwithstanding that he is not the employer of those workers, be treated for the purposes of this Part as a dispute between an employer and those workers if the dispute relates—
There is a trade dispute for the purpose of this Part even though it relates to matters occurring outside Great Britain.
A dispute to which a trade union or employer's association is a party shall be treated for the purposes of this Part as a dispute to which workers or, as the case may be, employers are parties.
In this section—
"employment" includes any relationship whereby one person personally does work or performs services for another; and
"worker", in relation to a dispute to which an employer is a party, includes any worker even if not employed by that employer.