The HSE, paramedics and Siptu representatives will face questions today from the Oireachtas Health Committee concerning ambulance response times.

It's part of a review ordered by the Health Minister James Reilly after it emerged that crucial response targets were being missed.

Siptu has welcomed the review - to be carried out by the HSE and the Health Information and Quality Authority - and has also asked that they take into consideration the level of resources available to the ambulance service.

Chair of the Health Committee, Jerry Buttimer, says the public need to be able to have confidence in the service: