Participants are recruited to this study if they have been monitored during their labour with a monica AN 24 monitor

There is no clinical intervention. This study is just capturing data from devices used part of routine clinical care. The results of this data collection will be analysed to inform study results.

This is a feasibility study with a primary objective to establish design of a large multi-centre study. Outcome measure is percentage number of participants to have a umbilical blood cord gas PH level below 7.20. This will inform the statistical sample for the larger study.

This is a feasibility study with a primary objective to establish design of a large multi-centre study. Outcome measure is how many participants recruited per month this will inform how many centre's will be required to deliver statistical sample size for larger study.

This is a feasibility study with a primary objective to establish design of a large multi-centre study. Outcome measure is number of completed data sets. A complete data set equals more than one hour of recorded data from mobile fetal heart rate monitor and arterial umbilical cord blood gas level taken. This will inform estimated sample size for larger study.