Tis the season to be jolly apparently, at least a few of the sportsbooks online seem to agree with this sentiment this year. Here's a pretty thorough list of sportsbook advent calendars 2015 currently available, check this blog for daily updates on any worthwhile deals:
content.betfred.com/adventcalendar/
https://promotions.betsafe.com/50-days-of-christmas/en/
http://www.betvictor.com/casino/en/christmas-countdown
https://www.bwin.com/en/p/advent
http://promotions.comeon.com/gb/christmas/
http://promotions.coral.co.uk/christmascoral/
https://www.footballpools.com/news/the-football-pools-festive-advent-ure
https://www.galabingo.com/promotions/bingo-promotions/advent-2015
https://www.mrgreen.com/en/advent-calendar-casino
https://sport.netbet.co.uk/advent-calendar-gb
https://www.redbet.com/en/casino/promotions/1
https://superlenny.com/Casino/
https://www.unibet.co.uk/promotions/advent-calendar
