Cutting 3mm ply down to size

I get larger sheets of 3mm ply in and have some jobs that need to have a square plate. Instead of using the laser I think it will be better to use a table circular saw or something similar - is there anything you guys use out there? I’ve seen really large table top things for sale in places like Wikes or Screwfix, but they seem a bit over the top for cutting an A4 sheet of ply down.