Celtic have been branded “very insensitive” by a leading Hillsborough campaigner for confirming the introduction of standing areas at their ground next season barely a week after the end of the inquest into the cause of Britain’s worst sporting disaster.

The Scottish champions confirmed on Wednesday they would become the first British club with an all-seater stadium to modify it to include so-called rail seats, which give spectators the option of whether to sit or stand during matches.

The news, revealed in Celtic’s season-ticket renewal information, came eight days after a jury ruled that the 96 fans who died at Hillsborough had been unlawfully killed.