Cullinghood is very low key and nice (K H events on facebook).
Oakfield equestrian run clear round days every so often where you get 20 mins in the arena to warm up and pick your own height to then jump a clear round - this doesnt have a show atmosphere though.
Always worth looking at Snowball farm or BCA. The latter always seem to have loads of open to all RC events on.
See what’s going on at:
BCA, Snowball, Checkendon, Merrist Wood, Cullinghood, West Wilts, Cherwell, Oakinham, Wickstead, Blewbury or Yately (if they still run?!),
In addition to the ones mentioned, Wickstead were doing a regular one through winter and spring I think. Also Sower Hill near Uffington had one on a Wednesday before summer hols started.
Yateley was such a loss for eventers as it was perfect for prepping horses on grass.
Rectory farm and wellington are also near that area and both have lovely arenas with plenty of space to slow down/ re sort yourself and well built courses.