sentences:  The GLC also warned that the break-up of the county councils would lead to the creation of "endless joint committees and over 60 quangos".Several of the councils including the GLC had however rendered themselves vulnerable by committing scarce public funds to controversial causes such as Babies Against the Bomb, the Antiracist Year, and lesbian mothers seeking custody of their children; the Save the GLC campaign itself was estimated to have cost ratepayers £10 million, climaxing in a final defiant week of festivities that cost ratepayers £500,000.During the 1980s there was a great improvement in the United Kingdom's productivity growth relative to other advanced capitalist countries.