A delay of over 22 years since the last substantive step in proceedings, with no satisfactory explanation, will result in dismissal for want of prosecution where presumptive prejudice to the defendant is obvious and substantial. It is not necessary for the defendant to prove that a fair trial is impossible; substantial prejudice from delay is sufficient. A non-party with an indirect but substantial legal interest may be granted leave to be heard on appeal where the parties may not fully present the relevant submissions.
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