Also had a pretty poor experience departing TPE. Long lines even flying Royal Laurel. Over crowded BR lounge, went over to the SQ lounge which was spartan.
Arriving wasn't too bad.
LHR blows it out of the water, and LHR isn't exactly good. LHR T2 & T5 for sure, and dare I say T4 with the excellent QR lounge, pretty good EY lounge and quick waiting times throughout the terminal.