Some handy regex patterns for grabbing different bits of gubbins and stuff;
EmailAddress:
^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$
Postcode:
^[a-zA-Z]{1,2}[0-9][0-9A-Za-z]{0,1} {0,1}[0-9][ABDEFGHJLNPQRSTUWXYZabdefghjlnpqrstuwxyz]{2}$
HTML Tags:
<(.|\n)*?>
HTML Tags except for the BR tag:
(\<)(?!br(\s|\/|\>))(.*?\>)
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