In commercial banking, A&L has struck a deal to use the Post Office network for the handling of smaller-ticket nonwholesale cash. It has also made an arrangement with Securicor regarding the larger-ticket wholesale cash market. A&L said: 'This new business model for the provision of cash-handling services is sustainable for the longterm future. It will, however, involve a step-change increase of around £20m per year in the commercial banking cost base from 2003.'