The Change of District Name (Londonderry) Order (Northern Ireland) 1984
The Department of the Environment in exercise of the powers conferred by section 51(1) of the Local Government Act (Northern Ireland) 1972(a) and now vested in it(b) and of all other powers enabling it in that behalf, having received an application from the Londonderry City Council to change the name of the district of the council from Londonderry to Derry, hereby makes the following Order:-

(a) 1972 c. 9 (N.I.)
(b) S.R. & O. (N.I.) 1973 No. 504 Art. 7(1); S.I. 1976/424 (N.I. 6)