Seems clear the recent form t's are a continuing sell of a very large bock of shares being put out in such a way as to minimumly affect the stock's pps. But until it is done, I think all these shares looking for buyers will hold down the price. Will probably know when they are done by a few days in a row of no form t.
'T' If reporting a single protected transaction. A protected transaction occurs when a large order is going through the market. The buyer (or seller) may wish to keep the order anonymous from the rest of the market as the size of the order could greatly alter the price of the stock. With a protected transaction, the dealer will put the trade through in small quantities rather than knock the whole order out in one hit. The entire transaction is reported once the deal is completed. The LSE is notified at the start and at the end of the transaction. However, the market as a whole isn't told until the end, thus the order is protected.