Letting banks loose is back on the agenda as UK politicians chase growth at any cost

Labour has helped get ball rolling by lifting the bankers' bonus cap but we have seen before how this play ends

As the old ways of turning a profit become more difficult - from assembling cars to selling soap powder - politicians of all stripes want the City to inject some dynamism into the economy.

From Labour to Reform, the siren call of London's financial district is strong. If only, they ask, the wheels of the banking industry could be cranked to spin faster, surely much more money could be generated and we would all be rich.