A Metropolitan police officer accused of a string of sex offences against four women is facing nine additional charges relating to four other alleged victims, the Crown Prosecution Service has said.

PC David Carrick, 47, now faces charges relating to 29 alleged offences, including 13 counts of rape, against eight women between 2009 and 2020.

Carrick last month entered not guilty pleas at St Albans crown court via video link to charges relating to the first four women. At the hearing it was alleged he had raped one woman he met on the dating app Tinder, falsely imprisoned another in a cupboard under the stairs, and sexually assaulted three of the complainants by urinating on them.

He is due to appear at the same court on 28 January for a mention hearing relating to those charges, with a provisional trial date in April.

The CPS said on Monday it had authorised Hertfordshire police to charge him with the new alleged offences in relation to four additional women. They are six counts of rape, one count of attempted rape, one count of assault by penetration and one count of coercive or controlling behaviour. He will appear at Westminster magistrates court on Wednesday in relation to the new charges.

Carrick was first charged with a single count of rape in October.

Peter Burt, a senior district crown prosecutor for CPS Thames and Chiltern, said: “Following an ongoing investigation by Hertfordshire constabulary, with continued support from the CPS, we have now charged David Carrick with a total of 29 alleged offences against eight women.

“We remind all concerned that criminal proceedings against the defendant are active and that he has a right to a fair trial. It is extremely important that there should be no reporting, commentary or sharing of information online which could in any way prejudice these proceedings.”