Emmerson also questioned whether the British government did enough to protect Litvinenko from threats to his safety in light of his relationship with MI6.
It added the newly-installed bollards, which are 7ft (2.1m) apart, and a traffic light system would enforce traffic regulations and protect the road from further deterioration.
The case is also very relevant in light of the continuing MMR debate and how necessary vaccination programmes are to protect worldwide populations from the disease.