ok, so the Epiphone is much better than westfield then?
No, Epiphone are fairly average, speaking harshly you pay good money to have a second hand claim to the Gibson name and for it to look like a Les Paul.
At £100 everything is fairly even to be honest so might as well just get the guitar with the neck and action to suit you because it's not going to sound very good. Though once in a while you do find the rare deal.
For £150 you should be able to go to shop and blag* a pacifica and a Crate FW15 with some strings, a bag, picks, cables and straps. Whilst I defiantely can recommend the Crate Amp, I can't recommend you a guitar as you may just hate the way it feels.
*You: "I went online and I found this great deal of xyz, can you match it? no? ok I guess I'll just go order it off that website..."
Shop: "Your twisting my arm and my supervisor is going to rape me (he wont) but ok."
Works everytime for any instrument or equipment.