"I find it hard at work as we have a very small team, only 6 of us work there, and we tend to share everything. Today I had a punnet of plums on my desk, went for a meeting.... came back to 1 plum left lol. Shame the only thing they bring to share is crumpets, biscuits and sweets!"
Would it help if you could get them onside by explaining what you are trying to do? I doubt if they'd deliberately sabotage your efforts and would hope they'd turn out to be supportive. I've worked within a group of half a dozen people in the past and we were more like a family most of the time!