West Lancashire company says it is largest provider of specialist refuse collection vehicles in the UK. : West Lancashire company says it is largest provider of specialist refuse collection vehicles in the UK West Lancashire fleet hire business NRG Riverside has been sold in a deal that sees an exit for Manchester equity firm Palatine after a period of “significant” growth. NRG Riverside has been acquired by Astatine Investment Partners, a specialist private equity investor focused on infrastructure investments. Skelmersdale-based NRG Riverside leases and maintains vehicles such as waste collection trucks and tankers to public and private sector organisations.