On 9 September 1940, 12 Hurricanes were scrambled and two claims made over Bf 109s by Zumbach (both of JG 53) and one by František – a Bf 109 of 7./JG 27 – who also claimed a He 111 of KG 53 as a "probable", while a Bf 110 was shot down by F/L Kent. Sgt. Kazimierz Wünsche had to bail out with burns over Beachy Head, and Sgt. František crash-landed. At 16:00 hours on 11 September 1940, the squadron attacked a bomber formation south of London. F/O Cebrzyński was fatally wounded by return fire, while Sgt. Wójtowicz shot down two Messerschmitt Bf 110s before being shot down and killed. The pilots claimed two Bf 110s, one Bf 109, three Do 17s and four He 111s. In the massed dogfights over London on 15 September 1940, the squadron was heavily involved, with nine Hurricanes led by F/Lt Kent intercepting a German raid in mid-morning. Nine kills were claimed: six Bf 109s, one Bf 110 and two Do 17s. In the afternoon, a flight formation led by S/Ldr Kellet claimed four victories, while the five-strong "B" Flight led by F/O Urbanowicz, claimed two Do 17s, for two Polish pilots shot down (Sgt. Brzezowski killed, Sgt Andruszków bailed out while P/O Łokuciewski was wounded in the leg, returning to base safely). During the day, No. 303 Squadron claimed 15 victories. On the afternoon of 26 September 1940, No. 303 Squadron was scrambled towards a large enemy raid over Hampshire, with the Poles claiming 13 victories for three Hurricanes damaged (actual Luftwaffe losses were nine in total). There was further intense fighting on 27 September 1940, with 11 Hurricanes engaged by massed escorts to a KG 77 30-bomber formation. The squadron claimed 15 victories: six Bf 109s, two Bf 110s of LG 1, four "He 111s" (probably Ju 88s) and three Ju 88s although F/O Paszkiewicz and Sgt Andruszków were killed. F/O Żak was wounded and bailed out over Horsham and four Hurricanes were lost in total. Just six aircraft were serviceable during the afternoon, engaging a raid of 15 Ju 88s. Two bombers were brought down before the escort intervened, and a Bf 109 was also claimed. F/O Urbanowicz claimed four German aircraft during the day. On 30 September 1940, F/O Urbanowicz once again claimed four victories, while a Do 17 was brought down by P/O. Radomski, who bailed out, as did