A quick aggregation of the declared donations to the Ed Miliband for Leader campaign (so far – I’d expect some donations in the last stages of the campaign still to appear):
£133,000 from trade unions (43% of the total)
£80,951 from other large donors (i.e. over £1,500) (26%)
£95,000 from small donors (31%)
£308,951 in total
Source: donations declared on the Ed Miliband website.