The remaining week is pretty much "make or break" period, because succeeding in the goal gets agonisingly close, and it can still go either way. Elite: Dangerous will most likely make it though, since it has around £200,000 to make in seven days, but last few days have seen increasing pledging rate. It's also often seen in past campaigns that on campaigns which get close to succeed in the end, the last days have provided large percentage of money of the overall goal.
Braben & Co. should get approximately £28,000 a day on average speed. Braben has kept the campaign page coming with loads of updates within the last couple of days. He has explained a lot about game world economy, and how it works, as well as about trading system.
Here are the videos from newest updates for Elite: Dangerous, as well as Teaser video for those who don't know about the game: