Anthony Ward wrote:
The canteen at my workplace is trying to improve its recycling
statistics and so is bagging up the used coffee grounds from the
machine and offering this to customers for their garden compost bins.
A colleague has said this is not a good idea because the grounds are
too acidic. I would appreciate knowing the thoughts of experienced
gardeners on this please. I am not particularly wanting to grow
acid-loving plants.
I have also heard that one should not add citrus peel to the compost
bin for the same reason. Does the group agree?

no. finished compost is near neutral under all circumstances. if you
can get buckets of coffee (or buckets of peels) go for it.