... because they believe it is a “contentious issue” and doing so might “imply the BBC supported one side or another.”
www.bpas.org/about-our-charity/press-office/press-releases/women-s-healthcare-bodies-call-on-bbc-to-reverse-stance-on-abortion-information/
I don't see how simple factual info to a legal and necessary service is "supporting one side". The link includes the letter asking that they reverse their current stance on providing links to information about abortion, co-signed by British Pregnancy Advisory Service (bpas), Brook, the Faculty of Sexual and Reproductive Healthcare, Family Planning Association (FPA), Marie Stopes UK, the Royal College of Midwives, and the Royal College of Obstetricians and Gynaecologists.