720 to HDCAM

Hi guys, I've been using creative cow for a while but this is my first time posting, hope I'm in the right forum, apologies if I'm not.

I'm looking to enter my graduation short film in this coming Sundance festival. The film was a 720 composite, (i did film it in 1080 but used a 720 comp in AE to allow more motion in post production, zooming scaling etc)and i wondered if anyone could clue me in to how I can get this on HDCAM, and where I could get that done, I'm a UK resident and pretty new to all this formatting for film festivals.

All guidance is greatly appreciated.

Thank you for your time.

Gareth
Zenithfilms
vimeo.com/zenithfilms