By Laura McGuire Bargain retailer B&M has beaten its “lockdown peak” as the firm reveals it is trading at the higher end of its guidance thanks to Brits sniffing out a bargain On Tuesday, the value-led store said group revenues grew to £5.5bn over the year to March, up 10.1 per cent compared to last year. The London-listed retailer also noted a nine per cent leap in adjusted earnings before interest taxes, depreciation, and amortisation to £639m. A squeeze on living costs has driven customers to seek out affordable goods, leading to a rise in popularity in stores such as B&M. B&M also acquired…