Thanks for the quick answer joe.

So I should be pulling the motor off the frame and have a look, or what?

The problem is no spark at the spark plug.
Mower has recently had a new spark plug fitted, but the lead from the coil to the spark plug is broken, so I had to dodge it up. but as I previously said i have a great deal of trouble starting it.

When I do get it started, it only seems to go after I have removed the connection and replaced it, cleaned the plug, etc.

And yes it is the red mower, with a white cover and red catcher.

Thanks.