[talkingcars]

Sounds very much like the starter to me. Mine was working fine and then suddenly nothing, when you turned the key the headlights didn't dim as they should when the starter draws current. RAC came out and push started the car to get me home, next morning it struggled but did fire up so I took the car to the garage, they replaced the starter and it's been fine ever since.

I did notice it was turning better with the new starter.

Try the headlight test on your's to see if it's the starter and jump leads direct to the starter should turn it if the ignition is at fault.