Ask to take part

Contact the study team using the details below to take part. If there are no contact details below please ask your doctor in the first instance.

Contact Information:

Dr Samantha Harrison
GILD@nottingham.ac.uk


Prof Kate Walker
GILD@nottingham.ac.uk


Study Location:

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Be Part of Research - Trial Details - Glycaemic control in labour with diabetes (GILD Trial)

Glycaemic control in labour with diabetes (GILD Trial)

Medical Conditions

Glycaemic control in labour with diabetes


This information is provided directly by researchers, and we recognise that it isn't always easy to understand. We are working with researchers to improve the accessibility of this information. In some summaries, you may come across links to external websites. These websites will have more information to help you better understand the study.


Diabetes during pregnancy affects about 9 in every 100 women or birthing people. Most of these cases are gestational diabetes (GDM), which develops during pregnancy and usually goes away after birth. During labour or before a planned caesarean, people with GDM are often closely monitored to keep their blood sugar levels in a safe range. However, some find this monitoring uncomfortable or intrusive. New research suggests that very tight control of blood sugar during labour might not be as necessary as once thought. This study will compare two approaches—tight control and a more relaxed approach—to see how they affect the birth experience, the baby’s health, and overall outcomes.

Start dates may differ between countries and research sites. The research team are responsible for keeping the information up-to-date.  

The recruitment start and end dates are as follows:

23 Sep 2025 31 Dec 2026

If you join the study, you’ll be randomly placed into one of two groups during labour:
-One group will have their blood sugar checked every hour, aiming to keep levels between 4–7 mmol/L.
-The other group will have checks every 2–4 hours, with a wider target range of 4–10 mmol/L.
If your blood sugar goes outside the target range, you’ll be treated with insulin as part of usual care.
Researchers will also ask you about your experience of the monitoring and your birth.


You may be able to take part if you:
-Have gestational diabetes
-Are aged 16 years or over (or under 16 years if considered able to consent)
-Are expecting one baby (not twins or more)
-Are planning to give birth at 37 weeks or later
-Can give informed consent

You can take part if:



You may not be able to take part if:


1. Known lethal fetal anomaly2. At time of consent, known clinical indication to recommend birth < 37 weeks


Below are the locations for where you can take part in the trial. Please note that not all sites may be open.

  • Musgrove Park Hospital (taunton)
    Musgrove Park Hospital
    Taunton
    TA1 5DA
  • Royal Sussex County Hospital
    Eastern Road
    Brighton
    BN2 5BE
  • Queen Elizabeth Hospital
    Woolwich Stadium Road Woolwich
    London
    SE18 4QH
  • Northwick Park Hospital
    Watford Road
    Harrow
    HA1 3UJ
  • Royal Berkshire Hospital
    London Road
    Reading
    RG1 5AN
  • Queens Medical Centre
    Derby Road
    Nottingham
    NG7 2UH
  • University Hospital of North Durham
    North Road
    DURHAM
    DH1 5TW
  • Watford General Hospital
    Vicarage Road
    Watford
    WD18 0HB
  • University Hospital Lewisham
    Lewisham High Street
    London
    SE13 6LH
  • Darlington Memorial Hospital
    Hollyhurst Road
    Darlington
    DL3 6HX
  • Princess Anne Hospital
    Coxford Road
    Southampton
    SO16 5YA
  • Bradford Royal Infirmary Duckworth Lane
    Bradford
    BD9 6RJ
  • Doncaster Royal Infirmary
    Armthorpe Road
    Doncaster
    DN2 5LT
  • Worthing Hospital
    Lyndhurst Road
    Worthing
    BN11 2DH
  • St Thomas' Hospital
    Westminster Bridge Road
    London
    SE1 7EH
  • Glangwili General Hospital
    Dolgwili Road
    CARMARTHEN
    SA31 2AF
  • Burnley General Hospital
    Casterton Avenue
    Burnley
    BB10 2PQ
  • Chesterfield Royal Hospital
    Chesterfield Road Calow
    Chesterfield
    S44 5BL
  • Queens Medical Centre, Nottingham University Hospital
    Derby Road
    Nottingham
    NG7 2UH
  • Calderdale Royal Hospital
    Godfrey Road Salterhebble
    Halifax
    HX3 0PW
  • St Richards Hospital
    Spitalfield Lane
    Chichester
    PO19 6SE
  • St Marys Hospital
    Oxford Road
    Manchester
    M13 9WL
  • Jessops Wing
    Royal Hallamshire Hospital Glossop Road
    Sheffield
    S10 2JF
  • Whiston Hospital
    St. Helens & Knowsley Hospital Warrington Road
    Prescot
    L35 5DR
  • Princess Royal Hospital
    Lewes Road
    Haywards Heath
    RH16 4EX
  • King George's Hospital
    Barley Lane
    Ilford
    IG3 8YB
  • University Hospital Wishaw
    50 Netherton Street
    Wishaw
    ML2 0DP
  • Bassetlaw Hospital
    Kilton Hill
    Worksop
    S81 0BD

Taking part in the study may not directly benefit participants, but the information we collect from this study may help us to understand more about the best way to monitor blood sugars during labour in people with gestational diabetes. This may be of benefit to participants' in a future pregnancy and may help all women/birthing people with GDM in the future.
Whilst recent research suggests tight monitoring of blood sugars may not be as important for preventing problems in the baby as once thought, we do not know which one is better for women/birthing people and their babies. That is why we are doing this study. When women's blood sugars are monitored in labour closely, about 10 in every 100 babies (i.e., 10%} have low blood sugars after birth, which could mean the baby is admitted to the neonatal unit, away from their Mum, for treatment. If a woman/birthing person's blood sugars are monitored labour in a 'more relaxed' approach, we think about 15 in 100 babies (i.e., 15%} might have low blood sugars after birth, but we don't know - it might be slightly less, it might be slightly more.
There are no physical risks from completing the questionnaires or optional discussions. It is possible that thinking and talking sensitive topics such as gestational diabetes and birth experience may cause feelings of anxiety.

Prof Kate Walker
GILD@nottingham.ac.uk


Dr Samantha Harrison
GILD@nottingham.ac.uk



The study is sponsored by University of Nottingham and funded by NIHR Evaluation, Trials and Studies Co-ordinating Centre (NETSCC).





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Read full details for Trial ID: ISRCTN13019598

Or CPMS: 58451

Last updated 31 March 2026

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