Circular saw along the bottom, being cautious of any breakout. For £70 you can't go wrong tbh. It's not one of those jobs that can really go horribly wrong but for £70 I'd rather have an hour or two to do something else and not have to worry.
Though if I already had a circular saw I'd be doing it myself. Had to do a few in my house when I had the floor retiled.
Though if I already had a circular saw I'd be doing it myself. Had to do a few in my house when I had the floor retiled.