The latest published data on naturalisation applications can be found here: https://www.gov.uk/government/publications/in-country-migration-data-august-2019 Naturalisation is not an automatic process and the Home Office has to conduct a number of checks before it can reach a decision on whether to grant citizenship. The extent and length of time taken to complete the checks on the more complex cases varies according to the particular circumstance of each case. The progress of these checks is closely monitored and decisions are made when the checks are completed.