Aer Lingus exercised Fifth Freedom rights from Dublin to Copenhagen among other European destinations and used Manchester as the UK stopping point. This is why the 1-11s were daily visitors at Manchester and why Manchester saw Aer Lingus jets before Heathrow. WHBM, have I got that right ?
I remember once watching a EIN 1-11 starting engines at LBA and seeing a streak of orange flame flying out of the port engine. It looked spectacular but I guess nothing too serious.