Originally Posted by
ROKNA
4. Travelling Ireland -> UK you go through the domestic channel and bypass all immigration though legally a non UK/Irish national should report to the immigration service at that airport
Only a few non-UK/Irish nationals are required to report to immigration at the UK port of arrival. Most can proceed perfectly legally without contacting UK immigration.
Originally Posted by
aidoair
While it is not the usual UK immigration officers there checking documents it is UK border police officers.
If you are referring to uniformed "UK Border" officials, these are the same as the immigration officers to whom you refer. Recent changes to the organisation have put immigration officers into uniform.