Complex sentence: The Act repealed the existing legislation on the matter, the Profane Swearing Act 1623 and the Profane Swearing Act 1694, and was itself formally repealed by the Criminal Law Act 1967.
Split into simpler sentences: The Act repealed the existing legislation on the matter, the Profane Swearing Act 1623 and the Profane Swearing Act 1694. The 1745 Act was formally repealed by the Criminal Law Act 1967.