Petrol Prices- I Don't Usually Notice

As it's the last full weekend proper before the Christmas break I've been whizzing around on public transport a lot today (more later) and noticed a couple of petrol prices.

Normally I never notice- It's only occasionally that I fill up, when using a hire car.

Anyhow;

• Not a million miles from home, in North West London: Unleaded is 85.9p per litre
• Just off a well known shopping street just to the west of Hyde Park: Unleaded is 118.9p per litre

I know it's a free market etc etc, but an uplift of 38%? Outrageous.