Originally Posted by
UAPremExecflyer
What is confusing?
It's all pretty clear: you can use the EU line. What makes you think you can't?
Could it be because the line says British and EU/EEA passport holders and the OP does not have a British or EU/EEA passport?
IMO, it is indeed not at all obvious which line a third country national with ILR should use. Going by the signs, they would suggest the non-EU line. However, I can see why the EU/EEA line can make sense too.