▁and ▁national ist ▁communities . ▁The ▁final ▁I RA ▁use ▁of ▁proxy ▁bomb s ▁came ▁on ▁ 2 4 ▁April ▁ 1 9 9 3 , ▁when ▁they ▁forced ▁two ▁London ▁tax i ▁drivers ▁to ▁drive ▁bomb s ▁towards ▁Down ing ▁Street ▁and ▁New ▁Scotland ▁Y ard . ▁There ▁were ▁no ▁cas ual ties , ▁however , ▁as ▁the ▁drivers ▁managed ▁to ▁shout ▁warnings ▁and ▁to ▁abandon ▁their ▁cars ▁in ▁time . ▁A ▁convention ally - del iver ed ▁bomb ▁was ▁det on ated ▁by ▁the ▁I RA ▁on ▁the ▁same ▁day ▁in ▁the ▁financial ▁centre ▁of ▁B ish ops gate , ▁in ▁Central ▁London . ▁ ▁Colombia ▁ ▁In ▁the ▁early ▁ 2 0 0 0 s , ▁F AR C ▁reb els ▁began ▁to ▁use ▁proxy ▁car ▁bomb s ▁in ▁Colombia . ▁That ▁has ▁been ▁attributed ▁to ▁training ▁given ▁to ▁F AR C ▁by ▁members ▁of ▁the ▁Pro vis ional ▁I RA . ▁In ▁the ▁Colomb ian ▁province ▁of ▁Ara uca ▁in ▁January ▁ 2 0 0 3 , ▁three ▁brothers ▁were ▁forced ▁to ▁drive ▁car ▁bomb s ▁into ▁military ▁check points , ▁each ▁told ▁that ▁the ▁other ▁brothers ▁would ▁be ▁killed ▁if ▁they ▁did ▁not ▁comp ly . ▁One ▁of ▁the ▁brothers ▁died , ▁along ▁with ▁six ▁Colomb ian ▁soldiers , ▁and ▁another ▁surv ived ▁with ▁serious ▁inj uries ▁in ▁a ▁separate ▁incident , ▁when ▁only ▁one ▁of ▁the ▁three ▁explos ive ▁charges ▁attached ▁to ▁the ▁vehicle ▁went ▁off , ▁resulting ▁only ▁in ▁minor ▁damage ▁to ▁the ▁target . ▁The