The company said it believes there are potential irregularities in the ballot, which would render it unlawful.
“The company is making this High Court application because the integrity and legal soundness of any electoral process is vital.
“This is particularly the case in relation to potential industrial action around the General Election on 12 December 2019.
“Royal Mail is also making this application because of the damage industrial action would do to the company and its customers in the run-up to Christmas”.
