There are four ways law can be reformed; either through judicial change, reform by parliament, pressure groups or law reform agencies.

However, what are the advantages and disadvantages of law reform through judicial change in England and Wales?

closed as too broad by Nij, Pat W., Dale M, feetwet Apr 7 '17 at 20:06

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There is only one way law can be changed in the U.K.: by statutory instrument, either a bill passed by parliament or a minister (or delegated official) acting under a law that delegates power to them.

Courts can develop, clarify, interpret, extend or limit law (and they have to because parliamentary drafting is abysmal) and such decisions are binding on future cases in lower courts.

The others you mention can only advocate change.

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