▁G PO ▁covered ▁the ▁two ▁lower ▁flo ors ▁with ▁postal ▁h alls , ▁offices ▁and ▁sorting ▁rooms . ▁There ▁were ▁mail ▁dro ps ▁through ▁which ▁mail ▁would ▁fall ▁to ▁a ▁band ▁convey or ▁on ▁the ▁bas ement ▁and ▁dispatch ed ▁up ▁to ▁the ▁sorting ▁room . ▁One ▁of ▁the ▁most ▁memor able ▁features ▁is ▁its ▁cur ved ▁service ▁counter ▁which ▁was ▁almost ▁ 9 0 m ▁long . ▁The ▁bas ement ▁was ▁linked ▁to ▁a ▁ 3 5 - met re ▁sub way , ▁also ▁called ▁the ▁G PO ▁tunnel ▁that ▁ran ▁under ne ath ▁Full erton ▁Road ▁to ▁a ▁pier . ▁From ▁there , ▁a ▁lift ▁would ▁bring ▁b ags ▁of ▁mail ▁to ▁the ▁Master ▁Att endant ' s ▁Pier , ▁and ▁then ▁transferred ▁onto ▁ships ▁that ▁were ▁anch ored ▁at ▁the ▁pier . ▁Special ▁mail ▁was ▁all ▁sent ▁to ▁the ▁neighbour ing ▁countries ▁via ▁sea , ▁which ▁was ▁the ▁main ▁transport ▁back ▁then , ▁thus ▁requiring ▁at ▁least ▁ 2 ▁months ▁to ▁reach ▁United ▁Kingdom . ▁This ▁is ▁further ▁delayed ▁by ▁the ▁fact ▁that ▁all ▁mail ▁had ▁to ▁be ▁personally ▁sorted ▁by ▁hands . ▁ ▁Before ▁postal ▁workers ▁were ▁allowed ▁to ▁work , ▁they ▁had ▁to ▁p ledge ▁to ▁u ph old ▁their ▁integrity . ▁As ▁public ▁servants , ▁they ▁were ▁not ▁allowed ▁to ▁leak ▁any ▁information ▁on ▁what ▁went ▁through ▁them ▁( including ▁the ▁origin ▁of ▁the ▁mail ). ▁Everything ▁at ▁work ▁was ▁strictly ▁confident ial . ▁In ▁the ▁past , ▁there ▁was ▁no ▁bank ▁trans fers ▁available ▁thus ▁people