Sales at number 2 Sainsbury's were up 0.6 percent,while Asda saw growth of 1.8 percent.
The big four continued to be outpaced by discounters Aldiand Lidl, whose sales were up 10.7 percent and 10.3percent respectively.
Grocery inflation was 2.5 percent during the period, downfrom 2.9 percent recorded by Kantar in March.(Reporting by Paul Sandle;Editing by Alistair Smout)