I was looking for the catch with the hitachi. It says "slide" but from the cutting capacities, I'm sure it's not.
It isn't.
http://www.hitachi-powertools.co.uk/plist/c10fce.pdf
"I know there are a few guys in the trade on here, what do you recommend for a budget of £150 ish?"
There lies your problem - anyone in the trade is likely to have spent more than twice that amount, so is unlikely to know very much about the cheaper/DIY models. There's no reason why you should spend that sort of money though. Having said that, both Hitachi and Makita makes excellent tools, so if you are happy with the cutting capacity of the Hitachi C10FCE or the Makita MLS100, then I reckon either would be excellent buys.