Britain's Guardian newspaper is reporting that British citizens using biometric passports will be confronted by longer queues than before at UK borders after the country opened eGates to different countries.A Home Office analysis seen by the Guardian concluded that changes announced by Philip Hammond on Wednesday, which allow citizens from seven other countries including the US to use e-passports to travel through Britain, will slow down UK citizens' journey times.The chancellor said in his spring statement that the government would allow citizens of the US, Australia, Canada, Japan, New Zealand, Singapore and South Korea to use e-passport gates.The papers say: "Home Office analysts have examined and modelled the impact of an expanded cohort using the e-passport gates. The result indicated a small impact on e-passport queue length."The immigration rules will continue to apply as they do now. This change is being introduced in consultation with various partners across government."