You can contact the local British Consulate or Embassy to ask for assistance in getting medical and legal help if you are still abroad.
If you have reported the incident/s to the police abroad, you will then need to report it to your local police on return; as they may be involved in handling any legal papers. All papers for the prosecution will have to be in the local language to the country where the attack took place. A good solicitor in the UK will help with this.
Once you are home the Foreign Office is the place to contact for up-dates on the case.
Please contact your nearest Rape Crisis Centre for a list of rape crisis centres abroad or visit www.rcne.com