I just wondered where the actual information for small grass strips comes from. Little Trostrey  Farm strip I think may not be correct as shown on SD. There is a strip a little south of this at Tank School (also known as Little Trsotrey farm I believe). On landing at Tank School, I was informed that the strip shown on SD was not recognised as a strip and that the owner of that site had no interest in aviation etc. Also looking at Google maps it looks very unlikely this would be a viable landing site. Could it be that the strip shown on SD is actually incorrect? Thanks.