So from £170 to £130, same price as the 3DS, it's a start.
Assuming UK gets same cut and add our VAT on top then PS Vita should cost around £152 if I did the maths right but they'll probably add more on. So lets say a £160-£170 price tag is very very tempting to me especially as I will be getting a PS4 in early 2014 and the remote play and future Gaikai stuff that I assume will let you stream games well away from your PS4 etc.
Edit - Just checked a couple of sites, £169.99 for Vita (I assume thats the new price, I don't remember it being that cheap before). Now for those memory card prices.