Transcends mere you and me.[Rosie} I find now that I cannot remember how I've heard it when "this train will terminate at Witham, from where a rail replacement bus etc.". OTH, "rittum" ...
[Witham] If it's the one in Essex, I used to work there and it was "Wittum" at that time. [Rhymes] the original glowworm was abcb, and we did do an aabb not long ago. It's doggerel, it probably doesn't matter much. The A12 up from Chelmsford
(Being from that part of the world, it is indeed Witt'm. I assumed Raak knew this and so decided to push the "misunderstanding the pronunciation from the spelling" joke a centimetre further.)