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I haven't found any official reports of it and so this is just based on public aerial photos.
The Bing aerial photo from 2018 isn't as clear as the Google one but shows the ditch is about 14m across and the eight holes are about 1m in diameter. More like stoneheles than post holes? Or just pits?
The pits to the north east are wider apart than the other three pairs but there is no noticeable entrance. But if that is the entrance then it is close to the summer solstice sunrise direction which is handily marked on the planning documents constraints plan in yellow.
What a shame it is now under a housing estate, I await the reports on it with interest.
Comparisons with Bluestonehenge and other circles in the area are obvious, if a little premature at this stage. See the excellent http://www.digitaldigging.net/bluestonehenge-oval-round-digital-model/ for more on those.