I posted this on the other thread, it's what caused me to notice them:
Wednesday [30 Nov] saw a trade of 1,842,857 shares at 67p when the spread was 87-92.
This is 9.7% of the company, so an RNS must be imminent.
According to Hemscott, significant holdings are Framlington I M with 21.45% and Collins Stewart with 8.67%.
Apart from no Holdings RNS, the trade was marked 'O' and was, presumably a single sell order. There being no counter-trade, the stock will still be with MMs until smaller buys clear it.