All of Britain's major grocers, including market leader Tesco TSCO.L and No. By James Davey LONDON, June 29 (Reuters) - British online supermarket Ocado Retail has followed rivals by cutting prices of some essential items, adding to hopes a surge in food inflation will moderate this year and provide relief to consumers battered by a cost of living crisis. Stubbornly high inflation has become a major political issue in Britain as it outstrips pay growth for almost all workers, while higher taxes and rising interest rates are also straining household budgets.