306 Gti6 engine sounds

[Niall]

There's a few nasty noises there. Sounds like there's a bad pulley for a start somewhere or maybe a slightly too tight Cambelt. To start with I'd do as above and run it without the auxbelt and see if it disappears.
Also sounds like some really noisy tappets. It's not a tapper though. That's a very distinctive noise!