Nobody can say exactly which way the market is going, but the fact that it's almost at a 9 month low might be a good sign for buying. Ed Bugos of The Dollar Vigilante thinks bitcoin itself might bottom out around $4800. If I had no exposure to the market, I'd start buying now. Dollar cost averaging (or pound cost averaging) is always a safe play, buying 50 pounds a week or something similar according to your budget. It's not stressful and you don't have to think too much about it, and this way you buy more BTC when the price is lower and less when the price is higher. Good luck