Cant find one for the Leon, had a Brodit in the Mondeo and it was excellent.
 
Very easy, got one to sit on leaf side of dash for mp3 player. Just held in with sticky taps and screw to provide tension. 5 minute job.
 
Sorry to but-in, does the bracket get in the way if the stereo needs to come out (does it wedge the stereo in, or is there enough clearance)?

Thanks.
 
No - it looks like a hook in profile that sits behind the radio fascia (+pushes it out a bit). I've not used the adhesive tape to fix it as it fits snugly enough without it.

Jon