(For a live weblog on European stocks, type Are living/ in an Eikon news window)* Shell tumbles on composing down up to $22 bln in asset value* Concentrate on PM Johnson’s speech later on in the day* Homebuilder Redrow tumbles on glum sales forecast* FTSE 100 down .5%, FTSE 250 off .1% (Adds opinions update selling prices)By Shashank Nayar and Sagarika JaisinghaniJune 30 (Reuters) – London’s FTSE 100 retreated on Tuesday as profit-booking and fears of yet another lockdown to include the relentless spread of the novel coronavirus took the shine off a person of the strongest quarters for British stocks considering the fact that the worldwide economic disaster.The blue-chip FTSE 100 was down .5%, with Royal Dutch Shell Plc staying the one most significant drag right after it reported it would write down the value of its assets by up to $22 billion on a decreased outlook for oil and gasoline charges. mid-cap FTSE 250 eased .1%, with vehicle , banking institutions and vitality corporations main declines in early trading.”Issues about the pandemic continue to weigh on market sentiment and traders are progressively worried that the route back again to normality could be a fairly extensive one,” mentioned Milan Cutkovic, market analyst at AxiCorp.Both equally British isles benchmark indexes have rebounded because April as a raft of international stimulus and a pickup in small business action subsequent the easing of coronavirus-pushed lockdowns bolstered optimism about a post-pandemic economic restoration.Facts on Tuesday showed confidence amid British organizations enhanced in June for the very first time because January, but analysts have warned of further stock market declines amid forecasts of a 20% slump in Britain’s economic system in the very first fifty percent of the year. eyes afterwards in the day will be on a speech by Key Minister Boris Johnson, the place he will set out his prepare to expend the British economic climate out of its coronavirus-induced crisis. specific shares, homebuilder Redrow tumbled 5.2% to the bottom of the FTSE 250 following expressing it predicted its turnover to fall far more than a third this calendar year. company Smiths Team jumped 6.4% as it noted a advancement in organic and natural revenue and set out a restructuring programme to improve running margins.