A man from Witham has had his jail sentence increased by four years following successful appeal by Essex Police.
21 year old Carter Adams, of St Nicholas Close, will now serve 12 years in jail, plus an additional four on licence.
Adams was initially jailed in February this year following guilty pleas to two counts of GBH with intent, one of ABH and three counts of common assault relating to incidents in Braintree in October 2014 and March 2015.
The appeal court heard how the sentence was deemed to be unduly lenient.
Adams was categorised as a dangerous offender and the bench noted that any offences of violence in prison will result in him serving the full 12 years.
When he is released on licence stringent conditions will be set around drug testing and if he behaves in prison the minimum he must serve before parole is considered will be eight years.