Overall - good medium level official trails with a good blue and mediocre red, unfortunately due to active management and a volunteer team to look after the trails aren't all as you'd expect. Lots of other trails to find on Trailforks so lots to explore.
That all said - the parking fee is fairly eye-watering at £5 for 2-hours so its best for short visits.
Blue trail is great fun and the last red descent near the cafe is a great intro to reds.
Parking fee and also that not enough is done actively mid-week to look after the current trails or building of anything new...with Rogate DH just around the corner it's a tough decision to chill at QE or send at B1KE
yes
Check out the full trail description: Queen Elizabeth Country Park Mountain Bike Trails