“17.1 – (2) If his statement of case has been served, a party may amend it only – (a) with the written consent of all the other parties; or (b) with the permission of the court 17.3 – (2) The power of the court to give permission under this rule is subject to – (c) rule 17.4 (amendments of statement of case after the end of a relevant limitation period). 17.4 – (1) This rule applies where – (a) a party applies to amend his statement of case in one of the ways mentioned in this rule; and (b) a period of limitation has expired under – (i) theLimitation Act 1980 ; or (ii) theForeign Limitation Periods Act 1984 ; or (iii) any other enactment which allows such an amendment, or under which such an amendment is allowed. (2) The court may allow an amendment whose effect will be to add or substitute a new claim, but only if the new claim arises out of the same facts or substantially the same facts as a claim in respect of which the party applying for permission has already claimed a remedy in the proceedings.” (2) If his statement of case has been served, a party may amend it only – (2) The power of the court to give permission under this rule is subject to – (c) rule 17.4 (amendments of statement of case after the end of a relevant limitation period). (a) a party applies to amend his statement of case in one of the ways mentioned in this rule; and (i) theLimitation Act 1980 ; or (ii) theForeign Limitation Periods Act 1984 ; or (iii) any other enactment which allows such an amendment, or under which such an amendment is allowed. (2) The court may allow an amendment whose effect will be to add or substitute a new claim, but only if the new claim arises out of the same facts or substantially the same facts as a claim in respect of which the party applying for permission has already claimed a remedy in the proceedings.”
“58. …The basic principle is [that]…Parliament has decreed a short time limit of only six weeks for challenges under s. 288, and it is one which cannot be extended by the courts. The reason is to ensure certainty in the planning process, and this is a very important public interest consideration. 59. I agree, and have that well in mind. The corollary is that the process must both be fair, and be seen to be fair, the first time round. Objectors to a planning application have no right of appeal on the merits as a developer does. For them s. 288 is the only form of challenge, and there is a vital public interest in ensuring public confidence in the fairness of the initial planning process.”
“it is possible to interpret Rule 19(1)(c) as referring to any enactment which allows or does not prohibit a change of parties after the end of a relevant limitation period. Plainly something is allowed if it is expressly allowed. But there are many contexts in which it is a legitimate use of language to say that something is allowed merely because it is not prohibited.”
“The object of the new paragraph (1)(c) was to ensure that the court cannot allow a change of parties after the end of a limitation period if the statute which prescribes the limitation period does not allow that to be done.”