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21 Sqn
226 Sqn
88 Sqn
82 Sqn
107 Sqn

All these units lost Blenheims on those days and in those areas.

The books recommended to you refine the losses down to who claimed what.

Alternatively you can obtain copies of the RAF Form 540 and 541 from The National Archives for the units listed. You will also need to cross check serials against the RAF Form 78s held at the RAF Museum Hendon as the ORBs are in error in a few places.

Ross