Originally Posted by Genius1

There's been significant investment in T3 in recent years (that's ongoing), and whilst it's true that there's still a lot to do and it's never going to be T2/T5, it's far from the pit it used to be.

As well as ongoing refurbishments and system replacements, the terminal has a completely new baggage system, a new Flight Connections Centre is being built (due to open 2019), and some of the structures are fairly new; Pier 6 was rebuilt in 2006 and the end of Pier 5 was extended just a few years ago to accommodate two A380 stands.