1:00 after turning left at the roundabout, the speed limit becomes 40 mph - but I could not see any "40" speed limit immediately after the roundabout. I did try the same route but also couldn't see any "40" speed limit sign immediately after the roundabout. I could only see "40" speed limit sign after driving for around 300 yards after the roundabout.
Is it just me or you also cannot see the 30 sign before you turn into the road to the test centre? If you miss it as you drive off from the centre you can fail in 10 seconds due to speeding.