HSBC’s (HSBA.L) possible relocation to Hong Kong is unlikely to save the British bank much tax – one of its reasons for maybe moving abroad – and could actually increase its bill, a Reuters analysis of the company’s filings shows. HSBC said last year that it was considering a possible shift overseas from London, citing higher taxes and tighter regulation in Britain and a desire to be closer to faster-growing Asian markets. Analysts said HSBC’s former home Hong Kong, with a corporate tax rate of 16.5 percent against a British rate set to rise to 26 percent, was the most likely destination.