Received my Transponder thanks Dee..
I can confirm, they work a treat in 2002 Toledo's, which probably means Leon's to..
Had a heart stopping moment coding it to the car though, as didn't work first time, but it did on second attempt!!
At one point, the immobiliser wouldn't recognise either key, the light just sat there flashing !
Once I repeated the whole procedure (zero'd again and re-added), the keys were recognised straight away, so now sorted !
I had visions of having to tow it to the dealers in the morning...
I did read somewhere that someone else had a similar experience ?
Anyway, all done, now the proud owner of a flip key, and my old original key now stashed as a spare..
Nice feeling now having two keys for my motor again
Thanks very much.