As per the title, need to know what to search for exactly, I forgot what the garage told me. I'll attach the photos of them to this post but I've found splits in the hoses and a seal has gone on another and so the turbo isn't kicking in properly as air is escaping from the hoses.

I was told it's best to source these parts myself from breakers or ebay as the lad at the garage says the parts from the supplier are a ripoff.

Cheers.

Hello Al,

Air intake pipes I guess, in photo 1. Photo2 -?

Have a look at LLL Parts website and you should find part numbers there as well. 
EBay would be a good source, and you can ask the sellers if they have what you want - search Audi A3 breaking - and limit it down from there. 
Kind regards,

Gareth.