High-street retailer Superdrug says supplies of products to its 300 stores will not be disputed following a walkout by more than 200 distribution workers.

The company, which has two branches in Bradford city centre and outlets in Shipley, Bingley, Keighley, Skipton, Heckmondwike and at Leeds-Bradford Airport, said it remained keen to reach agreement with Unite union members over revised terms and conditions.

Unite members at Superdrug’s distribution centre near Pontefract have begun an indefinite strike, which they claim will disrupt deliveries of products in the run-up to Christmas.

The 261 strikers say the changes to terms and conditions could cut wages by up to £2,000 a year and new shift patterns would damage family life.

John Evans, Unite regional officer, said: “This is an outrageous attack on the terms and conditions of Superdrug’s long-standing employees.”

The company, owned by Chinese-based venture capitalist firm A.S. Watson, said it had taken action to ensure shelves would remain stocked.

In a statement Superdrug said: “At the beginning of June we announced a review which was likely to result in proposals to realign terms and conditions of colleagues in our three distribution centres in Dunstable, Pontefract and Avonmouth.

“It is with regret that the union has chosen this course of action and we continue to be keen to reach a satisfactory conclusion to our consultations.”