▁by ▁the ▁existing ▁He ath row ▁C argo ▁T unnel . ▁( Google ▁Earth ▁ground ▁view ) ▁Some ▁open ▁land ▁between ▁St aines ▁Road ▁and ▁Stan well ▁Road ▁is ▁still ▁called ▁May field ▁Farm . ▁ 1 9 8 4 : ▁The ▁one - way ▁under ground ▁railway ▁loop ▁serving ▁He ath row ▁Terminal ▁ 4 ▁( s outh ▁of ▁the ▁central ▁terminal ▁area ) ▁was ▁added ▁to ▁the ▁London ▁Under ground ▁Pic c ad illy ▁line . ▁He ath row ▁Central ▁station ▁was ▁renamed ▁He ath row ▁Term inals ▁ 1 , ▁ 2 , ▁ 3 . ▁ 2 0 ▁April ▁ 1 9 8 4 : ▁a ▁bomb ▁expl oded ▁in ▁the ▁b agg age ▁area ▁of ▁T 2 , ▁inj uring ▁ 2 2 ▁people ▁including ▁ 1 ▁seriously . ▁ 1 9 8 6 : ▁The ▁M 2 5 ▁motor way ▁opened ▁in ▁ 1 9 8 6 ▁and ▁provided ▁a ▁direct ▁motor way ▁link ▁to ▁much ▁of ▁the ▁country . ▁ 1 ▁April ▁ 1 9 8 6 : ▁Terminal ▁ 4 ▁was ▁opened ▁by ▁the ▁Prince ▁and ▁Princess ▁of ▁Wales , ▁and ▁became ▁the ▁home ▁of ▁the ▁newly ▁priv at ised ▁British ▁Air ways . ▁▁ 1 9 8 7 : ▁The ▁UK ▁government ▁priv at ised ▁the ▁British ▁Air ports ▁Author ity ▁( BA A ) ▁which ▁controls ▁He ath row ▁and ▁six ▁other ▁UK ▁air ports . ▁ ▁Following ▁priv at isation , ▁during ▁the ▁late ▁ 1 9 8 0 s ▁and ▁