Russia has suffered its highest losses since the peak of the battle for Bakhmut in March, British officials said on Sunday. The UK military said both sides are suffering high numbers of military casualties as Ukraine fights to dislodge the Kremlin's forces from occupied areas in the early stages of its counter-offensive. According to British intelligence, the most intense fighting has centred on the southeastern Zaporizhzhia province, around Bakhmut and further west in Ukraine's eastern Donetsk province. While the update reported that Ukraine was on the offensive in these areas and had "made small advances," it said that Russian forces were conducting "relatively effective defensive operations" in Ukraine's south. The Ukrainian military said in a regular update Sunday morning that over the previous 24 hours, Russia had carried out 43 airstrikes, four missile strikes and 51 attacks from multiple rocket launchers. According to the statement by the General Staff, Russia continues to concentrate its efforts on offensive operations in Ukraine's industrial east, focusing attacks around Bakhmut, Avdiivka, Marinka and Lyman in Donetsk province, with 26 combat clashes taking place. Read More Putin shows off what he claims is ‘draft peace agreement’ with Ukraine - that they ‘refused to sign’ Russia had means, motive and opportunity to destroy Ukraine dam, drone photos and information show Ukraine said to have recaptured village in Zaporizhzhia – as fierce fighting continues across frontline