How long did it take for your offer to arrive?

I sent my UCAS application for Film and Television Production to 3 different universities (those being Hertfordshire, UCA and Bucks) back in December. Both UCA and Herts replied with conditional offers in about a week and a half, but Bucks have yet to reply and I'm getting a little worried since it's my number one pick. Just so I don't have to panic, how long did it take for your offers to arrive? I'd prefer answers from those in a similar field just in case it's course-dependant. Thanks in advance!