The statistician’s note attributes most of this increase to the National Archives. The Ministry of Justice (MoJ) received 4,755 FoI requests, and met the 20-day deadline in 90% of cases (4,257 cases).
In contrast, the Home Office received 6,320 requests and met the deadline in 81% of cases (5,134 cases) and the Crown Prosecution Service met the deadline for 800 of its 877 requests (91%).