Barbershop/ Shanty Singing

I used to sing with Great Western Chorus at Kingswood, however I quit around October 2011 because the competitive atmosphere was too stressful for me.

I'm only interested in Singing for fun and am interested in finding a Barbershop or Shanty Group in or near Bristol that just sing casually, however since my singing habitus, my skil has obviously atrophied over time.