Question to the Ministry of Justice:
To ask the Secretary of State for Justice, what the average sentence length in months was for people who received an immediate custodial sentence and had (a) zero, (b) between one and four, (c) between five and nine, (d) between 10 and 15, (e) between 16 and 25, (f) between 26 and 50, (g) between 51 and 75, (h) between 76 and 100 and (i) 101 or more previous convictions in each year since 2007.
The information requested is provided in the tables attached with this answer. These tables include data on:
We know that some prolific offending can be driven by a variety of factors, including drug addiction and poor mental health. The Ministry of Justice has also published experimental statistics at https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/756282/prolific-offenders-experimental-statistics.pdf which show that theft and summary non-motoring offences are the offences most likely to have been committed by prolific offenders.