Successive sentences describes two or more criminal sentences ordered to run one after another, so that the offender serves the second (and any further) term only after completing the first. It is closely related to, and often used interchangeably with, “consecutive sentences”, as contrasted with concurrent sentences.In England and Wales and Northern Ireland, the power to impose successive (consecutive) custodial sentences is governed principally by statutory provisions such as the Criminal Justice Act 2003 and related sentencing legislation, together with Sentencing Council guidelines. In Scotland, similar powers exist under Scots criminal law and practice, and in Ireland under legislation including the Criminal Justice Act 1951 and subsequent amendments. Usage and effect are broadly consistent across these jurisdictions.Successive sentences are commonly imposed for multiple offences arising from distinct incidents, or where statute requires a sentence to be served in addition to an existing term (for example, certain mandatory minimums). They significantly affect total time in custody, eligibility for parole, licence periods and calculation of release dates, making accurate sentencing remarks and record‑keeping essential.