Is there likely to be a Tube strike next Saturday?
I have not heard of this, and in my experience tube strikes NEVER happen on Saturdays. They are always mid-week in order to cause maximum disruption to commuters. But, often on the weekends there is engineering work going on and some lines may be suspended or part-suspended (usually the outer areas; not central London). If you want to check you can enter your proposed journey onto TFL’s site (link below), and if lines are suspended they will tell you an alternative way to get to your destination.