Just a warning to anyone thinking of getting one of these. My dad has one that he brought about 12 years ago and it is amazing but with me moving away from home i decided to get one of my own instead of mooching the one from my parents. Well brought the low priced one at first got it hoe, all set up and tightened made a few test cuts and the thing just wouldnt cut straight.. the cut was fine for about the first inch of the cut and then veered wildly off. Thinking this was a one off i went back and brought the 'professional' version of the same mitre saw. Got home again same thing. Checked the original one my dad had and realised to save money the housing around the blade which slots into the two rods on the base were originally made of metal and very little play in them. The new ones were made from plastic and as if that wasnt enough the thread for the guide rods wasnt put in straight either so short of bending the cast iron base you would never get a straight cut. Have found many other reviews since i found this out now on the wickes website with people having the same problem. The shop tries to fob you off saying you didnt tighten the blade etc etc but when I showed them the original one (brought from my parents place) in comparison to their model and the cuts they made they instantly gave me a full refund. :D
Hopefully this will save others the same hassle.

its annoying when companys like that change tool construction for cheaper and usually worse alternatives.

These tools are invariably Chinese in origin and are a batch that are badged up with the buyer's name. You will probably see the same saw as a cheap range product in all the big DIY stores. That does not mean they are all bad though and if you give them a good look over and buy a new blade they can give good service. The blade that comes with them is invariably crap and it will give you a false indication of the saws capability.

DWD

it is definatly a problem with the part that guides the blade.. I still cannot find a decent one so if anyone knows of a very accurate mitre saw (hand not circular electric saw) then let me know :)

These type of saws are accurate as picture framers use them. If this is what you meant by hand type? http://www.homecrafts.co.uk/products-Mitre-Saw_T001.htm

DWD

Just hold your combination square ontop of the moulding and cut along that. Or mark with pencil and cut to the line.