2003 Ford Ka Problem with 53 plate 2003 StreetKa Luxury (te

Yesterday after driving approx 40 miles the oil temperature light came on. As I was unable to stop the car I crept the car the remaining 5 or so miles home. When the car had chance to cool off I checked the oil and water levels the oil was low so I put a Litre in it, and it also took on over 2 litres of water. The next day (today) everything seemed ok however after driving approx 5 miles and parking I noticed there was a water leak, the car was left for half an hr and proceeded to leave a small pool of water, however after looking at the water level it was still between the min max level and the water leak was obviously nothing more than a few drops. I then drove the car to the nearest garage approx 5 miles there was no noticible difference to the drive of the car, and no oil temp light, however just as I approached the garage a small amount of steam was leaving the bonnet. The guy at the garage had it up on the ramp and said that the radiator was not leaking but it would need to be checked by a ford mechanic as the radiator appeared to be forcing water out? On the journey home there was no steam and the car drove fine however the temp light returned and there was a noticible smell coming from the car, at this point I decided to pull over and leave the car. Any advice would be much appreciated apologies for the longwinded story.