Jean-Paul Constant, the chief sales and retail operations officer of B&Q’s parent company Kingfisher, will also take on additional responsibilities and work alongside Loeve until he leaves.
Loeve, a Dane, helped lead the One Kingfisher transformation plan. He will be in charge of Netto in Denmark, Germany, Poland and Sweden. He joined B&Q in 2015, replacing Kevin O'Byrne.
Kingfisher chairman Daniel Bernard will also leave in June.
B&Q total sales declined by 3.3% to £3,680 million reflecting planned store closures partly offset by sales transference.
Like-for-like sales increased by 3.5% of which 2.6% resulted from sales transference associated with the store closures. LFL sales of seasonal products were up 3.1% while sales of non-seasonal products, including showroom, were up 3.6%.