The HSBC in Diss is closing today for 15 days as refurbishments take place. The Mount Street site has shut its doors from this afternoon until 9.30am on May 29 to have work done on the site, including painting, new signage and the installation of state-of-the-art cash machines. George Hemstock, HSBC UK’s local director, said that the bank had discussed the temporary closure with its customers. The Diss branch of HSBC in Mount Street. “We will also be hosting community pop-up events at St Mary's Church Hall in Mount Street.