There is a YouTube video showing removal of front axle , in the video he uses long nose pliers to remove the clips but I use a flat blade screw driver.
The back axle (depends on Rover model) usually has two pop rivets that you drill out at the rear sides to remove a metal bracket that holds the axle in.
The catcher cover also depends on model ,if there are no locking parts on the ends of the cover hinge rod you just use a hammer and a small punch to hit the hinge rod out ,once it moves out a little you can use vice grips on that end to wiggle the hinge rod out but this can slightly damage the hinge rod so you just file it before a refit.