Tips, including how to save on FindMyPast and Ancestry subscriptions, are in the latest Lost Cousins Newsletter.
It looks like in the short term Ancestry.ca's offering of a 6 month subscription to the Canada Deluxe (World) Membership for $49, only for new subscribers, beats the UK deal. But beware of the small print:
Offer valid until; May 20th at 11:59 (ET). .. Membership will be renewed automatically at the end of the 6 month subscription period and your payment method will be debited at the rate of $77.70.