The governing Conservative Party’s Scottish leader will accuse the nation’s first minister, Nicola Sturgeon, on Monday of putting her “party before pandemic”, calling the timing of her plans to hold a second independence vote was reckless.

Sturgeon said this month she was hoping that a strong performance by her Scottish National Party (SNP) in an election in May would give her the mandate to hold a second referendum, a move Prime Minister Boris Johnson has said he will not approve...