Spotted this on the O/S map (marked tumulus) and just had to investigate!
Taking the B4017 north out of Drayton you soon come to a rough track on the left with a bridleway sign. There is room to park one car here.
Walk a short distance up the bridleway and the Barrow soon comes into view in the field on your left, under some telegraph cables.
When I visited the field was full of crop (chest high) so only the contour of the Barrow was visible as raised crop against the skyline. It appears to be about 1.5 metres high x 20 metres across. A winter visit would be best to give a more accurate description.