Just been changing my spark plugs and noticed that the ignition leads are a bit damaged. This is want i now think has been causing my starting problem.

I was gonna get new leads from german and swedish parts or audi and was wondering if any performence one are out there for any Audi A3 1.8sport.

Which one would you guys recommend and where can i get them from?
Online shops are good for me or any local shops in West London (ENGLAND).

Can Anyone please help and give me good advise!