I think that the only saws in the UK that will take a dado stack are the Delta clones, such as Woodford's Xcalibur. As memsey says, the arbour isn't long enough on other saws made for the domestic market.
There is also the issue of stopping time (the extra mass on a small saw may well make it overrun by more than 10 seconds) and guarding. It's not impossible to guard a dado stack, but you can use the standard guard that comes with the saw, you have to make rather more complex arrangements.
Sorry, it's not what you wanted to hear, I know, but it's not the right machine for that type of work.