Excellent guide along with information to give historical context to the areas you walk through. The Capital Ring seemed to be much better signed than its big brother, the LOOP - especially when its path followed along with other routes such as the Thames Path or Jubilee Greenway. However, there are still areas where signs are absent, or misleading (particular bugbear: not finding signs at complex junctions but instead about 100 yards down the trail, on a straight part of the track, pointing straight on) and it would have been a struggle to find the way without the guide.
The main thing I missed was distances to each of the possible exit points on the route which would have made it much easier to calculate what would be possible in a day's hike, when combining multiple walks.