Peugeot 306 cabrio...radiator leak (water in footwell)?

Hi, I have a Peugeot 306 cabrio (2000) and have been having some problems with the radiator. In the cold weather the rad froze, car overheated and the pipe at the top of the rad blew off due to built up pressure.
Got it replaced and all seemed ok...however recently the radiator has needed topping up every time I use the car and a large amount of water is pooling in both footwells (mostly drivers side...uk)
Are both things connected or is it separate problems? Thanks!

Sounds like your heater core is leaking.