The discount is available only for the Britain sub. This doesn't include specificially Irish collections, although many of the British military record-sets are crammed with Irish men, but it will still be of interest to the many family historians whose Irish ancestors settled in England, Scotland and Wales.
Use this link – 10% off 12-month Britain Subscription – to take up the offer; the discount code will be automatically applied.
The offer expires at 23:59 (UK) on Thursday 23 February.