Small business lender Shawbrook was valued at £1.9bn on its London debut - Layton Thompson London welcomed its biggest listing in four years on Thursday, delivering a much-needed boost to its embattled stock market. Small business lender Shawbrook climbed as much as 8.2pc following its debut on the London Stock Exchange, which valued it at £1.9bn. The company’s stock rose as high as 400.5p in early trading after its float had initially been priced at 370p per share. “There’s renewed optimism in the UK ...