The UK's biggest banks have announced a range of measures to support firms and contractors hit by the collapse of construction outsourcing company Carillion. 

The banks, including the Royal Bank of Scotland, Lloyds Banking Group and HSBC, said they would open funds for business customers in Carillion's supply chain. 

Meanwhile Nationwide Building Society said it will employ around 250 contractors from the company, meaning their jobs will be saved. The 250 contractors provide services such as cleaning and security. 

Lloyds said it would make £50m available, while RBS and HSBC said they would open funds worth £75m and £100m respectively. 

Business customers of these banks that were experiencing financial difficulty as a result of Carillion's collapse would be able to apply for payment holidays, fee support or, in the case of Lloyds, working capital, the banks said. 

Britain's biggest corporate failure in a decade took place after banks pulled the plug on lending to the company. 

As a result, Carillion went into liquidation on Monday, forcing the UK government to step in to guarantee public services provided by the company ranging from school meals to road works. 

Barclays is contacting its small business customers affected by the Carillion collapse to offer advice and assistance on overdrafts, a bank spokesman said. 

The bank has also set up a dedicated hotline for such customers, he said. 

The measures by the banks follow a statement by the banking sector's trade body UK Finance on Wednesday, which said that lenders were offering overdraft extensions and other emergency measures. 

UK Finance said banks were taking steps to ease the impact on small firms affected by the liquidation.

Nationwide said in its statement there were another 1,500 staff engaged by separate, third-party suppliers who work on Nationwide contracts with Carillion. 

Those suppliers will now have their contracts directly with the building society, Nationwide said.