Corrections.
Right, I've now sorted it, and further details for general use will be posted in the 'BoB Bits Box' thread. But for now, this is what it looks like for Tuck's Hurricane(s).
1). The photo in the 'Fly Past' article would appear to be taken at the same as, or a still from, the footage taken after the Italian raid of november 11th.( This was shortly before the introduction of the black underside to the port wing, and the Sky spinner and tail band, on 27th November). The Hurricane shown appears to be in the 'B' Scheme, so very possibly
V6864. Note that this aircraft has the Rotol prop.
2) The 'A' Scheme was normally applied to aircraft whose serial number ended with an odd number, and the 'B' Scheme to those ending in an even number (there were some exceptions), so, assuming that this was the case, V6555 more than likely had the 'A' scheme, as shown in both of the first two profiles you posted. It is also possible that this aircraft had the De Havilland prop at this time (second profile). Also, the use of the 'Burma' insignia on the starboard side emergency hatch is not definitely confirmed during this period, and is more likely to have been applied on his later aircraft, possibly from V6864 onwards.
3) The fin flash. From June 1940, these were changed to three, 9 inch wide stripes, which covered virtually the whole of the fin. This lead to some aircraft having the entire forward fin area in the red, although I haven't been able to confirm this for this squadron at the moment. From August 1st 1940, the fin flash dimensions changed again, to three, 8 inch wide stripes, which would have looked like those shown in the final profile. Also at this time, a 50 inch diameter 'A' Type roundel was added to the underside of the wings, which previously had been plain 'Sky' (after repainting from half black / white). However, due to time constraints etc, some aircraft (Hurricane and Spit) had a 30 inch diameter roundel, near the extreme wing tips. It would seem that 257 Sqaudron carried the correct, 50 inch diameter roundels.
4). The code letters on both Hurricanes and Spitfires during the Battle were Medium Sea Grey, stipulated as 30 inch high characters. These were used on the Hurricane, but 24 inch high characters were more common on the Spitfire, due to the space and shape of the fuselage. A noteable example of an exception here is 610 Squadron, whose Spits are immediately recognisable by their large code letters, overlapping the cockpit entrance flap, below the canopy. (The smaller codes were also applied to some Hurricanes, for example, 145 and 303 Squadrons.)
I'm afraid i haven't been able to find anything on the Churchill insignia, although i have a feeling I have got something somewhere - lost in one of the piles of cr...er..'Research Material Archives', somewhere in my hovel.
I hope this helps, and the final decisdion is down to you !!