If you don't already have a registered account with Ancestry UK, you'll need to create one. This requires you to provide your name and an email address; you don't need to submit financial details.
Once done, you can dive in, check out the various collections and start searching for your ancestors.
The free access will end at 11:59pm on Monday 5 April.
To view the entire collection catalogue, click the image, right.
To view only the Irish and British collection catalogue, click here.
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