You know what? This could go on and on. IFSP man certainly shows how it could. However, I find it hard to dispute the works test record typed by someone at Supermarine, indeed, I cannot see how it can be disputed and 'Mutts' own log is so far spread over a period of time that a mistake could be made.
ON THE OTHER HAND.................if Mutt summers went to Martlesham on 5th March and JQ followed him in the Falcon - and bought him back to Eastleigh it also follows that Mutt Summers could not have flown K5054 until later in the day, which he did. But, of course, you can transpose that sentence to March 6th also.
Its the supermarine test flight log for me although I feel sorry that JQ is now in dispute but it doesn't detract from his brilliance as a TP and, therefore, one of the greats.