MCAS can limit many things in life, but your love gives us all vital hope for a brighter tomorrow. Thank you for being there for our community; here’s how you can make a difference. 

Making a Donation

Your loving kindness provides vital hope for the MCAS community. Any amount you give – large or small has the power to improve lives. Click here to make a donation.

Give Monthly

Together we can make a real difference to the MCAS community – not just today, but tomorrow and the day after. Your continued kindness provides real hope for anyone facing an MCAS diagnosis. Click here to give a monthly gift.


"Thank you so much for getting back to me with such a lot of useful information. It will take a little while to read and digest it all, but it's really helpful to know there is support out there, including from your group."

How your donation helps

Join our community in making a difference! Your donation fuels supports vital initiatives, bringing hope and relief to those impacted by mast cell disorders.

£10 could provide a Casper pack with accompanying resources for a family living with MCAS.

£25 could provide an MCAS information pack with supportive resources for someone new to living with MCAS.

£50 could provide a virtual weekly community session.

£100 could support attendance at a medical conference to share resources and raise awareness about MCAS.

£1000 could allow us to run our weekly Rest and Unwind sessions for a whole year!

"Mia absolutely loves the book and has taken the second copy into school to share with her class as she says it's amazing that Casper knows just how she feels." Casper pack recipient

Unity Lottery

Together we can make amazing things happen! Mast Cell Action has signed up to the unity lottery! Unity is the nation's fundraising lottery platform. It's designed to give good causes the chance to raise money through a weekly lottery. When you join a lottery using the Unity platform, at least 50p of every £1 you play goes to your chosen cause. The remaining 50p is used by the platform to provide prizes and cover administration. 

How to play

  1. Choose Mast Cell Action as your chosen cause and pick how many £1 entries you’d like to play each week
  2. Click to join online by Direct Debit or Debit Card, or alternatively download the postal form
  3. Fill out your details and click submit, or post your form to the Freepost address

Trusts and Grants

We extend our heartfelt gratitude to all trusts and foundations for their generous support of Mast Cell Action's mission. Every contribution, no matter its size, plays a crucial role in supporting individuals living with Mast Cell Activation Syndrome and those who help care for them.

Supportive grants enable us to offer vital support, services and resources to our community members and to further our work with healthcare professionals; raising awareness, enhancing diagnosis, and improving treatment availability for those living with Mast Cell Activation Syndrome.

If you would like to know more about the Trusts and Grants that support us, how their support makes a difference to our community or want to explore ways to support our work, please visit our Trusts and Grants page.  

Corporate partnerships

Work with us to make a difference to the MCAS Community. 

We’re committed to making a difference to those affected by MCAS and want to partner with companies that share our aims and are committed to improving the health and well-being of people affected by MCAS.

There are many ways your company can partner with us, whether it is staff fundraising and employee engagement activities, company donations, Charity of the Year partnerships or any other support you think your company can give.

If you would like to find out more about how we can work together, please visit our Corporate Giving page. 



Thank you

On behalf of everyone at Mast Cell Action, thank you for your generous donation. Your support means the world to us and plays a crucial role in improving the lives of those affected by MCAS.

Your contribution will enable us to continue our vital work in raising awareness and supporting those affected. With your help, we can make significant strides towards a brighter future for everyone affected by MCAS.

Once again, thank you for your unwavering support and generosity. We are truly grateful for champions like you who stand with us in our fight against mast cell diseases.

Ruth recently made a donation to Mast Cell Action, following decades of increasingly severe and disabling reactions. You can read Ruth's story here.

Become a friend

Sign up to become a Friend of Mast Cell Action so we can keep you up to date on our progress and on how to get involved in our latest campaigns and initiatives. 

Become a friend


Mast Cell Action relies entirely on the generosity of people like you. Please make a donation now and together we can make a difference to those affected by MCAS.

Make a donation