4 ▁and ▁ 0 8 7 ▁for ▁non - ge ographic ▁and ▁ 0 9 0 ▁for ▁prem ium ▁rate . ▁Further ▁new ▁alloc ations ▁would ▁initially ▁conform ▁only ▁to ▁those ▁group ings . ▁Over ▁the ▁following ▁de cade , ▁the ▁ 0 3 0 , ▁ 0 3 3 , ▁ 0 3 4 , ▁ 0 3 7 , ▁ 0 5 5 , ▁ 0 5 6 , ▁ 0 7 4 , ▁ 0 7 5 , ▁ 0 9 1 ▁and ▁ 0 9 8 ▁ranges ▁would ▁also ▁come ▁into ▁use ▁for ▁new ▁services ▁or ▁for ▁further ▁expansion ▁of ▁old ▁services . ▁ ▁Geographic ▁number ▁changes ▁ ▁These ▁changes ▁set ▁the ▁following ▁areas ▁to ▁use ▁ 0 2 ▁area ▁codes ▁and ▁eight - digit ▁subscri ber ▁numbers . ▁ ▁Great ▁Britain ▁▁ ▁Note ▁Under ▁the ▁change , ▁the ▁two ▁London ▁areas ▁were ▁reun ified ▁under ▁the ▁single ▁( 0 2 0 ) ▁code . ▁New ▁numbers ▁beginning ▁with ▁ 7 , ▁ 8 ▁or ▁( l ater ) ▁ 3 ▁were ▁allocated ▁regardless ▁of ▁location . ▁ ▁All ▁of ▁the ▁above ▁areas ▁now ▁have ▁an ▁eight - digit ▁local ▁number , ▁in ▁place ▁of ▁their ▁previous ▁six ▁or ▁seven - digit ▁local ▁number . ▁For ▁a ▁short ▁while , ▁you ▁could ▁use ▁either ▁number ▁for ▁local ▁di alling , ▁but ▁local ▁access ▁to ▁the ▁old , ▁shorter ▁numbers ▁was ▁switched ▁off ▁after ▁a ▁few ▁months ▁of ▁parallel ▁running . ▁ ▁Within ▁London , ▁new ▁ 7 0 xx