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Textual Amendments
F1S. 17 substituted for ss. 17–19 (4.3.1999 for specified purposes, 1.6.1999 in so far as not already in force) by Social Security Act 1998 (c. 14), ss. 41, 87(2); S.I. 1999/528, art. 2(a), Sch.; S.I. 1999/1510, art. 2(d) (for a transitional provision see S.I. 1999/1510, art. 48(2))