Thanks Capn. What was your view on T 141, is it on the older aerial photos or other maps you have?
It's right on the cusp you see. If new works were brought to a halt, it's possible it was not built. As of Jan 1941, it was recorded on the original maps as 'projected, not built' but so was T 140 which you can see is still there.
I don't think it was ever built, it seems surplus to requirements with so many others in close proximity and S66 right behind it.