They are different per 'FindMyPast territory', product and subscription term, and entitlement depends on your status as either a new customer or an existing customer. The only thing that applies to all the discounts is that they will expire at 11:59pm GMT Sunday 15 July.
I've set them out below, according to 'territory'. You'll find detailed T&Cs on the landing page of each link.
FindMyPast.ie
New subscribers only: 30% discount on 12-month World subscription, reduces price from €179.50 to €125.65Existing customers: 10% discount on 12-month World subscription, reduces price from €179.50 to €161.55
FindMyPast.co.uk
New subscribers only: 30% discount on 12-month PRO subscription, reduces price from £156 to £109.20.Existing customers: 10% discount on 12-month PRO subscription, reduces price from £156 to £140.40.
FindMyPast.com.au
New subscribers only: 50% discount on 12-month World subscription, reduces price from AUS$239.50 to AUS$167.65.Existing customers: 10% discount on 12-month World subscription, reduces price from AUS$239.50 to AUS$215.55.
FindMyPast.com
All researchers: 50% discount on a one-month subscription to the Ultimate British and Irish package, reduces price from US$19.95 to US$9.98.