The new link from Buckingham Park to Berryfields is now open and you can follow a traffic free greenway all the way to Aylesbury Vale Parkway Station and Waddesdon. The path crosses the Quarrendon Historic lands owned by the Buckinghamshire Conservation Trust who have been greatly supportive. The construction of this 1.8 kilometer long path was carried out by Jack Hazell and his team over just 4 weeks. The work was managed by Greenways and Cycleroutes for Buckinghamshire Council who funded all the work.
More details here.