Here's some links which you may find useful:
Sexual Health Line Contains information on sexual health; advice can be given anonymously about Sexually Transmitted Infections (STI's) or you can find local services or clinics. Information Line: 0845 6060 234 (lines open Monday - Friday 8am - 6pm, Saturday 9am - 1pm) Helpline: 0800 567 123 (lines open 24 hours a day)
Worth Talking About Provides straightforward information for those aged 12 to 18; making it easier to discuss anything to do with sex. Helpline: 0800 28 29 30 (lines open 7am to 12 midnight)
Your STD/STI Help Anyone can catch an STI if they don't take precautions; this site provides information about STI's or ask a confidential question online.
NHS Choices - Live Well For articles and videos on Sexually Transmitted Infections this includes Chlamydia, HIV, herpes and where to tested.
Get Connected Providing a helpline and email service for young people to find the best support whatever their problem, includes online web chat. Helpline: 0808 808 4994 (lines open, 1pm - 11pm) Email: email@example.com.
The Site The Site is for young adults who need support and guidance through life. There are online advisers for questions of all kinds, such as relationships, problems with your partner, arguments with your family and more.
The Young Lovers' Guide What they don't teach you in sex education at school.
Terence Higgins Trust Whatever your sexuality, HIV status, gender, cultural background or ethnic origin, THT has services set up with your needs in mind. THT Direct: 0845 1221 200 (lines open Monday - Friday 10am -10pm, Saturday - Sunday 12 - 6pm)
Information on call charges to 08 numbers:
0800 - Free from BT land line. 0808 - Free from BT land lines and most mobile and other networks. 0845 - Calls cost up to 4p per minute with a max 10p set up charge from a BT land line. Mobile and other network rates may be higher. 0844 - Calls cost up to 5p per minute with a max 10p set up charge from a BT land line. Mobile and other network rates may be higher. 0300 - standard geographic call charges.