A long-standing member of Three Rivers District Council has decided to resign her seat because of ill health.
Member for Leavesden Councillor Sue Bartrick said her ongoing cancer treatment meant she could no longer dedicate the time required by the role.
Her resignation means a by-election will be held on Thursday June 4, when voters go to the polls in county and European elections.
Mrs Bartrick has also resigned her seat on Abbots Langley Parish Council.
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