I agree with the rest. The very most you would get from there are PPs, probably a pic of Dan, Emma, Rupert togeather and PP. Write individuality and good luck. Let us know you you get from.

(p.s. I good one to start with is Matthew Lewis he is a signer.)

Potter Crazy is quite right, and that's the filming address so over time it will probably get less replies. Write the members individually...I've had tons of luck!

You will only get PP from the address above the only people that will give them from here is,
Evanna Lynch
Daniel Radcliffe
Emma watson
Rupert grint,
and also you can request one of all of the main 3 from here.

I don't think any other actors are avaible to get from here,
And i sent for them all indivually dont bother sending postage though as they will pay there end,

i dont think it would work, its best to just wrote to each cast memeber.
most of the harry potter cast dont sign anyway.

If that's real, the things that you say, probably they will send me the autographs that have the right to send me! Right?

I'm not sure, but I don't think you will get all of their autographs then, since quite an amount of actors is with a different agency.
Take Michael Gambon (Dumbledore) and Matthew Lewis (Neville);
Michael is with the Independent Group Ltd., and Matthew is with Haymarket House. So I don't think that Leavesden Studio's owns the rights to send out more autographs than those who belong in their agency.

Good luck anyway(:

If I write to the whole cast like this:
Harry Potter Cast
Leavesden Studios
PO Box 3000
Leavesden
Watford
Herfordshire
WD25 7LT
UK

and request autographs from all the cast they will send them? :s

HELP PLEASE :)x