Gestation Calculator

This calculator has been designed to give you an idea of the treatment options available to you*. If you decide to have an abortion with Marie Stopes UK, one of our nurses will give a more approximate gestation date during your appointment by way of a scan.
*Please note that this online calculator will only give you an estimated gestation based on the details you have provided.

Please select the first day of your last menstrual period.



We are here to support you 24 hours a day, 7 days a week

Call us now on 0345 300 8090 or email services@mariestopes.org.uk

0345 300 8090

Marie Stopes UK Colchester Clinic

The Marie Stopes UK Colchester Clinic is located within Tollgate Practice and offers medical abortion treatment, STI testing and contraception consultations for women in the Colchester and Essex area.

Address: Tollgate Practice, 145 London Road, Stanway, Colchester, CO3 8NZ.

Telephone: 0345 300 8090 (24 hrs)

Aftercare support: 0345 122 1441 (24 hrs)

Email: services@mariestopes.org.ukPlease note treatment may occasionally differ from opening times. Call us anytime if you need clarification – 0345 300 8090 (24 hrs).

Opening Hours



09:00 - 17:00


09:00 – 17:00

 Please note treatment times may occasionally differ from opening times.  Call us anytime if you need clarification - 0345 300 8090 (24 hrs). 

NHS Abortion treatment available in Colchester, East Essex

NHS Abortion treatment in Colchester is free if you have an NHS number. You can receive treatment by visiting your GP who can refer you or call us direct to arrange your treatment on 0345 300 8090 (24 hrs).

Private Abortion treatment available in Colchester, East Essex

You can also choose to pay for private abortion treatment. Find out about our fees here.

How to get to us: Travel information

By Road:

Colchester Early Medical Unit is off the A12 on the Tollgate Centre Business & Shopping Park. Tollgate Centre Business & Shopping Park is found to the west of Colchester on Tollgate West, which can be approached from the Tollgate Road to the east or from B1408 London Road to the north. If using Sat Nav or a route-finder service, use postcode CO3 8NZ as the destination code.

If using the A12, leave at junction 26 and take the A1124 (Essex Yeomanry Way) towards Stanway keeping to the right hand lane. Continue over the next island and follow on with Sainsbury’s store on your left as you approach the second island. Turn left at this roundabout onto the B1408, (London Road, Stanway). The entrance to The Tollgate Practice is approximately 50m along on your right.


There are plenty of free parking spaces at Tollgate Centre Business & Shopping Park.

By Public Transport:

Bus: Bus numbers  65, 70 and 71  run regular services that stop directly opposite the centre from Colchester Town Centre.

Rail: Both Marks Tey and Colchester stations are just a 10 to 15 minute taxi journey from Tollgate Centre Shopping Park. Please visit National Rail for further details.

Access within the site:

The service is situated within Tollgate Practice which is located within a shared site with 2 other GP Practices at 145 London Road, Stanway, Colchester. On entering the building, please turn directly left into Tollgate Practice and there is signposting to direct you from reception.

Medical Abortion
STI Testing

Available download: