Escorted by 120 Bf 110s of III/ZG 76 and 25 Bf 109s of JG 53 as top cover are picked up by Polling radar at noon: a large formation approaching Brighton from due south before crossing the coast they turn west. As they cross in front of Polling and behind Ventor they are tracked by the ROC, splitting as they come to Spithead.
15 specially selected crews (II/KG 51) dive bomb droping 500kg bombs on Ventnor radar station taking it out of action for three days. 15 of the 74 bombs land in the complex.
A second formation of 70(68?) Ju 88s attacks Portsmouth harbour with horizontal and diving bomb runs in the face of 50 barrage balloons and intensive AA fire from guns on shore and ships. The bombers take advantage of the corridor through the barrage balloons at the harbour entrance.
The Hurricanes and Spitfires of 10 Group (152 , 213 & 609 Sqns) scrambled to intercept are vectored in by controllers in small groups and focus on the bombers whilst their escort, circling at 3,000m, wait for a large fighter group to arrive. As more and more bombers are shot down the escort realise that no large formation is going to present itself as a target and engages in the combat.
In the ensuing melee - that involved nearly 300 fighters in total - 13 RAF fighters are shot down and four are damaged, and five Bf 110s and two Bf 109s are lost.
More Bf 109s - the escort for the return leg - are seen heading west but Fighter Command vectors 615 Sqn's Hurricanes between them and the battle over the Isle of Wight.
12(9?) Do 17s were lost including that of the Geschwaderkommodore Oberst Dr Johnan-Volkmar Fisser who lead the attack on Ventnor.
Later German reconnaissance of Ventnor reports craters in the vicinity of the masts and station quarters on fire.