Oven fire - what will clean it? HELP!!!

[Lizzzombie]

Ok, so our dinner (toad in the hole) caught on fire yesterday in the oven, full on flames and smoke. Luckily it didn't spread but eventually went out in the oven when we turned off the heat.

So now I have the glorious task of cleaning it.
I've scrubbed and scrubbed, but its full of soot and grease.

Does anyone know of a wonder product which will clean this? Otherwise, I am just going to cook hob based meals until I have saved up for a new oven! (in maybe 5 years?!)

I need some help please!

This will smell a bit but is fabulous at cleaning the likes of BBQ racks with no effort.
Get some ammonia from, say, Boots. Put some on a cloth, then put the cloth in the oven and leave overnight.
The next day the burned on stuff should just flake off - obviously have all doors/windows open and, if you can get one, wear a mask while you can't take the oven outside!
With the likes of BBQ racks, put the soaked cloth and rack in a bin-bag, leave outside, clean outside etc.