▁w ides p read ▁misunder stand ings ▁about ▁area ▁codes ▁came ▁about ▁with ▁the ▁Big ▁Number ▁Change , ▁most ▁not ably ▁with ▁London ▁area ▁codes . ▁There ▁is ▁a ▁w ides p read ▁but ▁err one ous ▁assumption ▁that ▁London ▁has ▁three ▁area ▁codes ▁ 0 2 0 3 , ▁ 0 2 0 7 ▁and ▁ 0 2 0 8 , ▁whereas ▁in ▁fact ▁it ▁has ▁just ▁one : ▁ 0 2 0 . ▁Similar ▁misunder stand ings ▁came ▁about ▁with ▁a ▁few ▁other ▁area ▁codes . ▁ ▁See ▁also ▁▁ ▁Tele phone ▁numbers ▁in ▁the ▁United ▁Kingdom ▁ ▁List ▁of ▁di alling ▁codes ▁in ▁the ▁United ▁Kingdom ▁ ▁List ▁of ▁Wales ▁di alling ▁codes ▁ ▁UK ▁tele phone ▁code ▁mis con ception s — includes ▁the ▁common ▁" 0 2 0 7 " ▁and ▁" 0 2 0 8 " ▁mis con ception s ▁ ▁Notes ▁ ▁References ▁ ▁External ▁links ▁▁ ▁http :// www . of com . org . uk / static / archive / o ft el / public ations / 1 9 9 9 / consum er / q an um 9 9 9 . htm ▁ ▁https :// www . te legraph . co . uk / techn ology / ad vice / 3 3 0 4 0 8 0 / Boot camp - 1 1 6 - the - big - number . html ▁ ▁http :// www . area - codes . org . uk / bt _ code _ changes . jpg ▁