The currency is so small it's wide open to pump and dump manipulation by the big exchanges. You have to focus on trading volume and watch the big exchanges closely to see what's happening. Trust your instinct based around the psychological price level £8,000/$10,000 based on what we know happened around the previous splits and selling volume activity.
This third split is a bit different and there's a lot more interest and players in the market now. It could fall lower today and break below £6,000 so don't rush in is my advice. If you bought in low enough on the March crash, might wanna wait it out or sell take profits and buy back in much lower.
I've read everything I can by respected analysts (outside the cryptocurrency industry)...they are taking the view lower volatility after the split, and some high sell volume short term (this is supported by the institutional demand for option puts)..they are also predicting the price will rise a lot after the split to global economy uncertainty, fiat currency debt/low interest and more private equity looking for a hedge tool, but this could happen more slowly than previously. And BTC will become less price volatile after the split should see steady and sustained appreciation over the next 6-12 months and beyond..