I had to google AERO needles since I've never seen them, and it looks like they come from the UK. There's one person selling them (from Germany) on Ebay.com (the US ebay)...they're asking for less than $2.00 for the needles - but want $35.00 for shipping. Wow! That's ridiculous!
Maybe Willowangel can help you out from Scotland. Otherwise I'll keep looking here, and can ask at my LYS next time I'm there if they can order them for me.
Still trying to convince Henry the cat that knitting is a spectator sport!