Weather: rain and cloud

Fighter Command Serviceable Aircraft as at 0900 hours:

  • Blenheim – 49
  • Spitfire – 222
  • Hurricane – 362
  • Defiant – 23
  • Gladiator – 8
  • Total – 659

Faced with the prospect of further bad weather, Hitler yet again postponed Sealion.

Despite the conditions, Luftflotte 2 sent over small pockets of fighter bombers together with a mass of Me109s to harass the defences. The idea was that the bombers would attract RAF fighters who would then run into the Me109s who would slaughter them. The RAF flew 540 sorties, lost five of their number but shot down 8 of the enemy.

By night, there was a heavy attack on London by over 260 bombers. The West End took the brunt of this night’s raids. There was a great deal of damage and in particular John Lewis in Oxford Street went up in flames. There was direct hit on the telephone exchange at Greenwich and Marble Arch tube station was also hit. Merseyside and Glasgow were further targets that night.

RAF Bomber Command continued its night raids on the concentrations of barges in the French ports along the Channel.

73 Squadron Unofficial War Diary – 17 September
At 1550 hrs the Squadron was ordered to “scramble” to Hendon, angels 15, and join up with 257 Squadron. A glorious shambles was the result. The Squadron arrived over Hendon to find the sky absolutely stiff with aircraft, which on closer inspection proved to be British. If the number of aircraft shot down by the Hun is as great as he claims then after this afternoons display we are quite ready to believe that our production of aircraft and fighter pilots must have reached astronomical figures.

501 Squadron Operational Record Book – 17 September
One patrol (2 aircraft) took off on patrol at 13:50hours. 12 aircraft took off at 15:03 hours in company with 253 Squadron over Ashford. They were attacked by 20 Me109s. Sqdn Ldr Hogan attacked 1 Me109 and hit it in the radiator. This aircraft was seem to turn inland. Damage to this aircraft was not seen. Sgts Lacey and Egan were reported missing in this engagement but information was received that Lacey was uninjured but had baled out.

Reported Casualties (RAF Campaign Diary 17th September 1940):

*  Enemy: 10 confirmed, 4 probable, 2 damaged
*  Own: Five aircraft of which four pilots are safe.