Longleat Safari Park:
http://www.longleat.co.uk/ticket-prices/special-offers
Gulliver's Theme Park Milton Keynes:
https://www.gulliversfun.co.uk/milton-keynes/events/fathers-day-2014-15-jun-2014.htm
Painshill Park:
http://www.painshill.co.uk/free-entry-for-fathers-day/
National Trust Centres:
www.nationaltrust.org.uk/article-1355782609899/
Bristol Zoo:
http://www.bristolzoo.org.uk/dads-go-free-at-bristol-zoo-gardens-this-father-s-day-0
Museum of the Broads (Norfolk):
www.museumofthebroads.org.uk