4. Subject to Articles 5, 7 and 9, the following actions may not be brought after the expiration of six years from the date on which the cause of action accrued—
(a)an action founded on simple contract;
(b)an action founded on quasi‐contract;
(c)an action to enforce an award where the arbitration agreement is not under seal;
(d)an action to recover any sum recoverable by virtue of any statutory provision, other than—
(ii)F1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(iii)an amount recoverable under section 1 of the Civil Liability (Contribution) Act 1978F2.
F1Art. 4(d)(ii) omitted (1.10.2009) by virtue of Companies Act 2006 (Consequential Amendments, Transitional Provisions and Savings) Order 2009 (S.I. 2009/1941), art. 2(1), Sch. 1 para. 105(2) (with arts. 10, 11)