Driving north along the minor road past Lambourne 7 Barrows and Lambourne Long Barrow you can see one of the two Barrows marked on the O/S clearly in a field to your right.
From the road it appears to be about 1 metre high and 20 metres across.
The second Barrow to the east is not visible from the road and unfortunately I didn't have time to stop for a proper look at the Barrows.
Access looked straight forward enough across the fields but there doesn't appear to be any official public right of way.
English Heritage record the site as Sparsholt Down Barrow Cemetery and use list entry ID – 1018720