I checked the 4 early this morning and all were looking well - grazing to the east of the pasture pumps.
The water level in the ditch is good, comparing it to a photo i took in mid- April, it hasn't dropped. Checking the sluice there's still a small amount of water coming through from the silt reservoir. The troughs of the pasture pumps were half full, so I filled them.
I've now heard back from the MoD and Test Track is open this coming weekend (Saturday and Sunday) and every weekend in June. It's not open to the public during the week. If you're willing to ring the MoD Operations Room on arrival and departure from site, just to say that you're checking the cows, that can be helpful. The number is: 07484 516900 and give them the military code for test track, which is B4d.
The pre-arranged MoD opening/closure times are usually accurate but in case things change if the pedestrian gate is locked and the red sign is showing No Access, then please don't go onto Test Track.
Many thanks.