8 7 0 ▁for ▁non - ge ographic ▁re venue - share ▁numbers ▁and ▁ 0 9 0 x ▁for ▁prem ium ▁rate ▁numbers . ▁Within ▁each ▁of ▁these ▁groups ▁some ▁smaller ▁number ▁blocks ▁were ▁held ▁aside ▁for ▁the ▁older ▁ 9 - digit ▁mobile , ▁non - ge ographic ▁and ▁prem ium ▁rate ▁services ▁to ▁move ▁into ▁at ▁a ▁later ▁date . ▁In ▁ 2 0 0 0 ▁and ▁ 2 0 0 1 , ▁the ▁Big ▁Number ▁Change ▁put ▁those ▁final ▁parts ▁into ▁place ▁and ▁they ▁are ▁detailed ▁below . ▁ ▁At ▁the ▁end ▁of ▁the ▁process , ▁there ▁were ▁no ▁numbers ▁in ▁the ▁UK ▁beginning ▁ 0 3 , ▁ 0 4 ▁or ▁ 0 6 . ▁Additionally , ▁the ▁ 0 2 , ▁ 0 5 , ▁ 0 7 , ▁ 0 8 ▁and ▁ 0 9 ▁ranges ▁were ▁only ▁light ly ▁used . ▁With ▁Ph ONE day ▁in ▁ 1 9 9 5 ▁and ▁the ▁Big ▁Number ▁Change , ▁the ▁UK ▁had ▁achieved ▁huge ▁spare ▁capacity ▁for ▁new ▁services ▁and ▁simple ▁to ▁understand ▁prefix ▁group ings : ▁ 0 1 ▁and ▁ 0 2 ▁for ▁ge ographic ▁numbers , ▁ 0 7 0 ▁for ▁personal ▁numbers , ▁ 0 7 6 ▁for ▁pag ers , ▁ 0 7 6 2 4 , ▁ 0 7 7 , ▁ 0 7 8 ▁and ▁ 0 7 9 ▁for ▁mob iles , ▁ 0 5 0 0 ▁and ▁ 0 8 0 ▁for ▁free phone , ▁ 0 8