Above all, the Thatcher reforms reversed economic centralism, by curbing the power of national unions and through privatization.
Like the SWP, Workers Power is disabled by bureaucratic centralism - the flip side of which is, of course, anarchism.
Existing CPGB comrades have also been given a very bad lesson in democratic centralism which promises further difficulties in the future.
That is why Devolution works, and excessive centralism does not.