Find in StringRegular Expressions are very powerful search/replace tools and there are complete books dedicated to their use. Whilst there are too many variations to cover in one web page, I have included a sumary of some popular codes. (For simplicity I have assumed the regex is being applied to a string that is only one line in length (i.e. no embedded line feeds)
Is Plausible UK Postcode
Is Plausible UK National Insurance
Is Plausible Email
Is Plausible UK Driving Licence Number
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