New figures show the number of women giving Irish addresses at abortion clinics in England and Wales fell last year.
The HSE Sexual Health and Crisis Pregnancy Programme (SHCPP) said there was a decrease from 3,019 women in 2017 to 2,879 women in 2018.
This represents a rate of 2.9 per 1,000 women who travelled to the UK for an abortion in 2018 - a 57% decrease in numbers since 2001.
The figures were issued by the UK Department of Health.
The rate is calculated using annual population estimates for females aged 15 to 44 published by the Central Statistics Office.
Data for the same year, which was provided to the SHCPP by an online provider of the abortion pill, reports that the number of women from the island of Ireland who were supported by their service to obtain medical abortion was 1,405.
This figure has increased by 188 since 2017.
Since January 1st this year, abortion services have been legally available in Ireland under medical supervision up to 12 weeks.
The HSE said: "Notwithstanding this, the online abortion pill provider reports that 107 women from Ireland contacted their service in the first three months of 2019.
"The provider directed all women who contacted their service to the My Options phone line to support them to access medically supervised abortion in Ireland."
The provider reports that 43 of those women received 'additional support' from the online service over the period, compared to 184 women over the same period in 2018.
'New abortion services'
The HPRA also reported that nine seizures of 104 abortion pills were made in the first three months of this year.
Helen Deely is acting assistant national director for HSE health and well-being.
She said: "Women who reached out to an online provider earlier this year may not have been aware that new abortion services had been introduced and are available free of charge in Ireland.
"The online provider who shared data with the SHCPP directed all of the women who contacted their service to My Options.
"My Options was established as the first point of contact for women seeking information and support in relation to an unplanned pregnancy.
"Professional and experienced counsellors provide information and support on all options, including abortion information and continued pregnancy supports."
The Netherlands is the only other jurisdiction to which women from Ireland travel for abortion procedures in any numbers.
My Options information and counselling service is available from 9.00am to 9.00pm Monday to Friday and Saturday 10.00am to 2.00pm at www.myoptions.ie, 1800-828-010 (or 00-353-1-6877-044 if calling from Northern Ireland)