Hi vancouv
Yes I experienced this very thing on Saturday, but I was flying a PA28 alone, from Welshpool down towards Shobdon. In fact I saw an aircraft to my right. Wasn’t you was it??!
Yes it's scary. I always have strobes and landing light on if it gets really bad. I'd hope everyone else does the same.
To be honest, I can't see a way of avoiding it; I’ll just keep my eyes peeled, and listen out for other aircraft and their positions on the radio. Get a Radar Information Service if at all possible.
I always get passengers to look out, gives them something to do, and serves a purpose.
Bodie