I managed to purchase all the stuff needed from alchemist cupboard on the net after a recommendation from a friend. Here I bought pg, VG, nicotine and flavouring and some syringes for measuring the amounts. With an app off the App Store I was able to enter how much I wanted to make and at what nicotine strength and it told me how much of each I had to mix up.
While it costs me around a fiver for a bottle to last three days, I can make my own up at 89p for three days or 30p a day, cheaper than one cigarette and far more healthy.
So what's 30p a day not even the price of a coffee. I'm much happier on e cigs as now I can control nicotine doseage and hopefully be off these soon too.