Centre for obesity


Making a referral

We accept referrals from GPs if:

  • the GP surgery is in south east London, or
  • there are no other bariatric surgery services nearby

GP referrals

All NHS GP referrals must be submitted using the NHS e-Referral Service (e-RS). Referrals sent by email or post from NHS GPs will not be processed.

Bariatric surgery (tier 4)

Your patient may be suitable for surgery if they have:

  • a body-mass index (BMI) between 30 to 35kg/m2, with recent onset type 2 diabetes
  • a BMI between 35 and 40, with other significant disease that could improve if they lost weight (for example, type 2 diabetes or high blood pressure)
  • a BMI of more than 40
  • a BMI of more than 50kg (weight-loss surgery should be considered as first line treatment)
  • not managed to maintain weight loss using non-surgical measures, such as tier 3 weight management

We can only provide obesity medicines in restricted cases, following national guidance, and if the patient lives in:

  • Lambeth
  • Southwark
  • Lewisham
  • Bexley
  • Bromley

The first step on our obesity pathway is an online weight-loss surgery education group session. Your patient may not be suitable for this if they:

  • need an interpreter
  • have a significant learning difficulty
  • have already had bariatric surgery

If the patient is not suitable for this education session please note this in your referral.

Please make all referrals using the NHS e-Referral Service (e-RS).

  1. Under organisation or site name search for 'Guy's'
  2. Choose 'Guy's and St Thomas' Hospitals'
  3. Return to 'directory of service' tab
  4. Under 'service results' choose:
    • 'Video Obesity Medicine'
    • 'endocrinology'
    • 'Guy's and St Thomas''
    • 'RJ1'
    • The name of the clinician will be shown as 'McGowan, Barbara (Dr)'

South east London healthy weight programme

Our south east London healthy weight programme referrals page has information about referring to the healthy weight programme.

Last updated: October 2023

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