A nice walk to a WW2 pill box if you want to see it nearby.
If you carry on under the railway bridge there and go left after coming out other side 15m or so, along field edge on left path is a big WW2 pill box to explore, nothing much to see but is there for interest.
Easy stuff, this is the Thames path so will be not much fun if has been raining in recient times. It will get muddy, cache off main path a bit and in summer time there's long grass and stinging nettles.