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The party will also pledge to build 1.5 million homes and overhaul the planning system to deliver more action on housing. But the Conservatives say Labour's "tax raid" will "punish first-time buyers".
Wallingford Town Councillor Steve Holder said he was "thrilled" to be there to celebrate the opening of the new allotments.
A set of five new tower blocks up to 15-storeys tall are planned for Greenwich including Kidbrooke Village including 526 flats.
Councillors are due to hold a special meeting to decide whether controversial plans for 495 homes on a former gasworks site can go ahead.
A plan for 209 flats at the riverside in Reading has been blasted by a neighbour who has raised fears the development could damage his home.