I am currently researching the story , the Spitfire apparently put down on Love Lodge fields which are some way down stream from the bridge , with mechanical problems , after being repaired the pilot took off and did a pass under the bridge ,
When I was approached to do this commission , the story intriuged me and decided to take it on,
There is a very interesting video on YouTube of a similar stunt performed by Ray Hanna in his Spitfire flying under Windton Bridge in Co Durham whilst filming for the 1988 tv series 'Piece of Cake'
It has an uncanny resemblance to the river Towy and the Llandeilo Bridge although Winston is made of brick rather than stone,
I going to use photographic reference from Spitfires stationed at Pembrey during the war. indeed this could well be the squadron that the aircraft was attached to,