He authored the booklet Talking Independence, which sought to answer questions about Scottish independence, ranging from "What will I pay in tax?" to "Will I still be able to visit relatives in England?" and "Will we still get EastEnders?".
In 2013 the festival was launched on a barge on the Forth and Clyde Canal, chartered by The Clipperton Project and attended by Scottish Minister Alasdair Allan.
Edgar Allan Poe | Gary Allan | Allan Holdsworth | Alasdair Gray | Allan Ramsay | Allan Cunningham | Max Allan Collins | Allan Sherman | Alasdair MacIntyre | Allan Ramsay (artist) | Allan Moffat | Allan Cunningham (botanist) | Allan Border | Mitch Allan | Allan Octavian Hume | Allan Kaprow | Allan Harris | David Allan Coe | Bethwell Allan Ogot | Allan Cup | Ted Allan | Lucy Allan | Edgar Allan Poe's | Allan Williams | Allan Warren | Allan Vogel | Allan R. Bomhard | Allan Quatermain | Allan McCollum | Allan Heinberg |
Whilst a student, Hepburn ran the unsuccessful campaign for Alasdair Gray to become the Rector of the University of Glasgow and was the Senior Vice-President at the Glasgow University Students' Representative Council, a post once held by his SNP Parliamentary colleague Alasdair Allan.