Finally took the plunge and bought myself a circular saw, ended up
going for the Makita 5704RK (dont know if I have good or bad)

It came with the run of the mill blade but I am intending to cut
laminate worktop with it so on the look out for a new blade.

Do you need to buy a special blade ie designed for laminate or just use
a fine toothed one for wood.

Also does the make of the blade matter.

Would any of these be any good, Toolstation do a 3 pack for just over
£10, seem to be made by Silverline finest one is a 40 tooth blade :
http://www.toolstation.com/messages....5597&mainWin=1

Summit seem to do a 60 tooth blade for around £9 :

http://www.summitsawblades.co.uk/saw_blade_153.htm

Also when cutting say 40mm worktop with the Makita which has a max
depth of around 66mm I think, should the saw be adjusted in anyway or
just leave as is.

Take it you still put masking tape where cutting to stop any chipping.

Also do you justt always leave the riving knife as is and what is the
exact purpose of it,

Can anyone offer any advice on this matter.

Thanks in advance