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Allergy specialist workshops and clinics

See below for more information about our specialties, clinics and workshops. 

Our clinics run 9am-5pm, Monday-Friday. Most take place in the children's allergy service at St Thomas' Hospital, unless stated otherwise.

Our specialties, clinics and workshops

Day case procedures

The majority of children referred to the service will have their suspected allergy investigated, diagnosed and a management plan devised and discussed at their outpatient appointment.

However, a small number will require further investigation or treatment to be given as a day case.

This takes place at:

Elizabeth Day Care Unit
2nd Floor, D Block, South Wing
St Thomas’ Hospital
Download a map to the Elizabeth Day Care Unit (PDF 219Kb).

Our day case unit is led by nurse consultant Roisin Fitzsimons with a team of specialist allergy nurses.

The day care unit is where we perform food and drug challenges, administration of immunotherapy and anti-IgE therapy.

Oral challenges and supervised feeds

The majority of children with a suspected food allergy will have skin testing and blood testing at an outpatient appointment.

However, for a small number the results may not be conclusive, so to get an accurate diagnosis an oral food challenge or supervised feed is required.

We offer the largest food challenge service in the country, performing oral food challenges and supervised feeds in our dedicated day case unit three times each week (Monday, Tuesday and Thursday).

If your child requires a food challenge or supervised feed, your clinician should advise you and will give you a link to go online and book your child's food challenge or supervised feed.

If you have any problems booking your child's food challenge or supervised feed please contact us by calling 020 7188 6390.

Find out more in our patient information leaflet Food challenges and supervised feeds - information for parents and carers (PDF 98Kb).

Outpatient specialist clinics

Allergic conditions can affect a number of body systems. We know children who are affected by one allergic condition, such as food allergy are more likely to suffer from another, such as asthma or eczema.

For most children these conditions can be managed at their routine allergy appointment. However, we are seeing an increasing number of children with complex, interacting allergic conditions and have set up a number of joint clinics with clinicians from different specialities, to better manage these children with more complex conditions.

We run regular clinics jointly with other services so that children with more complex conditions can see healthcare professionals with different specialities in one place.

  •  Joint allergy and dermatology clinic:
    Dr Susan Chan  – consultant allergist
    Dr Emma Wedgeworth  – consultant dermatologist

  • Joint allergy and gastroenterology clinic:
    Dr Toms Marrs  – consultant allergist
    Dr Vora Rakesh  – consultant gastroenterologist
    Support is also provided by specialist dieticians
  • Joint allergy and respiratory clinic:
    Dr Helen Brough – consultant allergist
    Dr Atul Gupta  – consultant paediatrician
  • Joint allergy and ENT clinic:
    Dr Kate Swan  – consultant allergist
    Dr Ian Lilly – consultant ENT surgeon

Immunotherapy service

We run the largest comprehensive desensitisation service for children in the UK.

The service is run by Dr Adam Fox, consultant allergist and Roisin Fitzsimons, nurse consultant.

Desensitisation (also known as specific immunotherapy) is a treatment for severe allergies that do not respond fully to medical treatment.

We offer immunotherapy for allergy to:

  • pollen (hayfever)
  • dust mites
  • animal dander
  • insect venom

We also offer the option of subcutaneous (injection) or sublingual (oral) treatment.

Any patient who is being considered for the treatment is seen in an immunotherapy assessment clinic where different treatment options and suitability for treatment is discussed.

Treatment is initiated on our day care ward under the supervision of our specialist nurses and in the case of sublingual immunotherapy is continued at home. We do not currently offer a desensitisation service for food allergies.

We also provide a desensitisation programme for children who have had anaphylaxis to wasp and bee stings. This is an intensive five year treatment programme, requiring regular visits to our day care ward.

Monoclonal anti-IgE biological therapy service

This specialist tertiary service is offered for children with allergic asthma, who do not respond to maximal conventional therapy and have been referred from a respiratory physician for the input of allergy specialists.

These children are assessed in our specialist joint allergy and respiratory clinic and the anti-IgE therapy is administered in our day case unit.

The service is led by Dr Susan Chan, consultant allergist.

Children's drug allergy service

This unique tertiary level service aims to accurately and safely investigate patients referred with suspected allergic reactions to medications.

The service offers expert clinical opinion supported by skin prick and intra-dermal testing and where necessary, drug provocation testing.

It's service is led by Dr George Du Toit, consultant allergist and Roisin Fitzsimons, nurse consultant.

The majority of the investigations of drug allergy take place on our day case unit.

We are closely supported by our children's dermatology colleagues for the combined investigation of drug allergies that are of a contact nature.

High risk vaccination service

We provide a service for children who have had adverse reactions to vaccinations in the past or who are allergic to components of a vaccine, such as children with an egg allergy who require the seasonal influenza or yellow fever vaccine.

We are the only hospital in the UK which is a registered yellow fever vaccination centre; we accept referrals for children with an egg allergy who require the yellow fever vaccine.

We aim to see the child within two weeks of referral and are able to safely assess and where appropriate administer the yellow fever vaccination to children with an egg allergy.

The service is led by Dr George Du Toit, consultant allergist and Roisin Fitzsimons, nurse consultant.

For more information about yellow fever vaccinations see the National Travel Health Network and Centre website.

Children's chronic urticaria and angioedema service

This is a unique tertiary level service that aims to accurately and safely diagnose and manage conditions that present with angioedema and/or urticaria.

The service offers expert opinion supported by diagnostic skills for the diagnosis of autoimmune urticaria (through the use of autologous skin testing and serological basophil histamine release assays). 

It's led by consultant allergist Dr George Du Toit with close collaboration with children's dermatology colleague, Dr Carsten Flohr and adult dermatology colleague, Dr Clive Grattan.

Children's exercise-induced allergy service

This is a unique tertiary level service that aims to accurately and safely diagnose and manage conditions of an allergic nature that are related to exercise/activity.

Examples include:

  • food-dependent exercise-induced anaphylaxis
  • exercise-induced anaphylaxis
  • exercise-induced asthma

It's led by consultant allergist Dr George Du Toit.

Dr Du Toit enjoys close collaboration with exercise physicians at the department of sport and exercise sciences, Northumbria University, where he is visiting professor.  

Children's allergy integrated care service

In response to the changing needs in the way healthcare is delivered and support from healthcare professionals is accessed, we have developed a children’s allergy integrated care service.

This service is bringing allergy care closer to home for our local population.

We have developed workshops for parents and carers and hold outpatient clinics in local community centres.

It's led by Dr Helen Brough, consultant allergist and Roisin Fitzsimons, nurse consultant.

Community clinics

We currently hold outpatient clinics at The Streatham Suite at Gracefield Gardens, a Guy’s and St Thomas’ community centre in south London.

These clinics are run by Dr Helen Brough and nurse consultant Roisin Fitzsimons, supported by Guy’s and St Thomas’ allergy nurses and dieticians and local GPs.

If you would like your child to be seen in our community clinic please ask your GP to specify this on the referral to the service.

Parent workshops

We hold monthly workshops for parents or carers who would like to find out more about allergic disease, or require an update in management of their child’s allergic disease.

These workshops, lasting for two hours, are run by the children’s allergy specialist nurses and dieticians.

They are held at Gracefield Gardens in Streatham, Sunshine House in Camberwell and at St Thomas’ Hospital.

If you would like to attend one of these workshops please telephone 020 7188 9783 or email paediatricallergy@gstt.nhs.uk to find out the next available date.





Tel: 020 7188 3300

Opening hours: Monday-Friday, 9am-5pm

How to find us

Children's allergy service
Second floor, staircase B, South Wing
St Thomas' Hospital
Westminster Bridge Road
London SE1 7EH

This department is only accessible via lift/staircase B.

Map of Second Floor, South Wing, St Thomas' Hospital (PDF 219Kb)


©  Guy's and St Thomas' NHS Foundation Trust.
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