Star Wars VII studio address help

[theGJM2504]

Hi all! Just a quick question from me, I'd like to send Carrie fisher a thank you letter with some gifts that I forgot to give her at a recent convention, I was caught up in the rush and left them
At home is the pinewood studios address a good one to go through? I've seen people sending stuff there and getting RTS which is a bummer because I don't want anything signing
Any help is much appreciated
George