Gillott track. The sentimentalist.

Gillotts were the "go to" builder for the traditionalists after the war. I had a 1953 Fleur de Lis with a head clip. But very unusual.
I would not fret about the dropouts or the steerer. Build it up as it is with kit from the 4o's and you won't be far wrong.
The frame number is a puzzle. 1954 is too modern for this frame. 1947 is more like it. Can you take a photo of the number as stamped on the steerer. They were using 3/32nd stamps.

Paul Gibson from Ellis Briggs put me in contact with Chris Marshall. He seems to think he can modify the dropouts to make them look like the ones that would have been originally used....He will also stove enamel the frame. still not sure, i have time to think....

When i strip the frame of paint i will photograph the bottom bracket shell and also the steerer.....

Could the 54 79 refer to the seat tube (it is 54ctc) and frame angles? the best i can make out the headtube is also 79 degrees.