LONDON MARKET PRE-OPEN: Tesco Has Strong Christmas But Primark Suffers Thu, 14th Jan 2021 07:55 (Alliance News) - Stock prices in London are seen opening higher on Thursday on hopes for fresh US financial support under the incoming Biden administration, as Congress took the unprecedented step of impeaching the outgoing president for a second time. In early company news, the UK's largest supermarket Tesco enjoyed a strong Christmas period as sales of high-end food grew. Premier Inn chain owner Whitbread's trading felt the effects of lockdown restrictions. Primark clothing store owner Associated British Foods warned lockdowns will cause sale loss of more than GBP1 billion.