us ▁Gr ouvelle ▁ ▁Ps am mo ec us ▁st ult us ▁Gr ouvelle ▁ ▁Ps am mo ec us ▁ter etic oll is ▁Gr ouvelle ▁ ▁Ps am mo ec us ▁t not atus ▁Black burn ▁ ▁Ps am mo ec us ▁trig utt atus ▁Re itter ▁ ▁Ps am mo ec us ▁tr il och ana ▁Pal ▁ ▁Ps am mo ec us ▁trim ac ul atus ▁Mot sch ul sky ▁ ▁Ps am mo ec us ▁vitt ifer ▁Black burn ▁ ▁Ps am mo ec us ▁w itt mer i ▁Pal ▁& ▁Sen ▁Gu pta ▁ ▁Ps am mo ec us ▁x not atus ▁Gr ouvelle ▁ ▁References ▁ ▁Category : Sil van idae <0x0A> </s> ▁Stage co ach ▁Gold ▁bus ▁route ▁X 4 ▁is ▁a ▁bus ▁route ▁in ▁England ▁that ▁links ▁North am pton ▁and ▁Peter borough ▁via ▁Well ing borough , ▁K etter ing ▁and ▁Cor by . ▁This ▁service ▁is ▁operated ▁by ▁the ▁Stage co ach ▁Mid lands ▁bus ▁company . ▁ ▁Route ▁ ▁This ▁route ▁was ▁launched ▁on ▁May ▁ 2 8 , ▁ 2 0 0 0 ▁as ▁a ▁Stage co ach ▁Express ▁service ▁between ▁North am pton ▁and ▁Peter borough . ▁In ▁April ▁ 2 0 0 4 , ▁the ▁route ▁extended ▁from ▁North am pton ▁through ▁to ▁Mil ton ▁Ke yn es . ▁Over ▁the ▁years , ▁the ▁X 4 ▁route ▁has ▁linked ▁the ▁main ▁towns ▁of ▁the ▁county ▁of ▁North am pt ons hire ▁with ▁Mil ton ▁Ke yn es ▁and ▁Peter