LONDON, Nov 29 (Reuters) - Britain will change its rulebook to allow banks to take more risks in order to keep the City of London a leading global financial centre, a government minister said on Tuesday. Next week the EU will set out a new law to force banks in the bloc to shift some of their euro derivatives clearing from London to Frankfurt. "The overall thrust of things is to allow more risk... You get reward from taking risks, you shouldn't be risk off, we just need to manage that in an appropriate way," Griffith told a Financial Times event. "There is nervousness about the UK overall," Nunn said, referring to the period of political instability and concern over the nation's finances. Alison Harding-Jones, head of EMEA M&A at US bank Citi, told the event that Britain remained a strong place and open for business.

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