How to read this list
Rank
Position in the Top 100, sorted by audience size from largest to smallest. Updated weekly.
Audience size
Estimated number of unique people in United Kingdom who actively engage with this audience, derived from anonymized search-behavior signals.
Country share
Share of the global audience that is active in United Kingdom. A higher value means the audience is more locally concentrated here.
Avg age
Average age in years across the people who engage with this audience in United Kingdom, derived from anonymized search-behavior signals. A dash means demographic data is not yet available.
Female share
Share of women among the people who engage with this audience in United Kingdom. 50% is gender-balanced; values above mean female-skewed, below mean male-skewed.
Ranking
| Rank | Audience | Audience size | Country share | Avg age | Female share | Subtype |
|---|---|---|---|---|---|---|
| 1 |  American Student Dental Association |
19M | 89.0% | — | — | Charity |
| 2 |  national trust |
3.6M | 76.7% | 46.9 | 73.6% | Charity |
| 3 |  United Nations |
1.9M | 4.9% | 44.3 | 55.0% | Charity |
| 4 |  Animal Equality |
1.7M | 12.4% | 48.2 | 72.1% | Charity |
| 5 |  American Marketing Association |
1.4M | 5.2% | — | — | Charity |
| 6 |  Humane society |
1.1M | 6.3% | 47.5 | 73.5% | Charity |
| 7 |  Royal National Lifeboat Institution |
885k | 80.6% | 47.7 | 49.3% | Charity |
| 8 |  Social Good |
798k | 32.5% | 47.0 | 68.1% | Charity |
| 9 |  WaterAid |
410k | 54.7% | 50.0 | 64.7% | Charity |
| 10 |  British Council |
355k | 2.9% | 38.6 | 56.1% | Charity |
| 11 |  New York City Ballet |
264k | 4.7% | 41.7 | 73.8% | Charity |
| 12 |  Autism Speaks |
262k | 7.8% | 40.9 | 79.6% | Charity |
| 13 |  World Economic Forum |
248k | 6.2% | 44.7 | 47.8% | Charity |
| 14 |  FamilySearch |
239k | 1.8% | 33.6 | 55.4% | Charity |
| 15 |  Rainforest Alliance |
232k | 16.1% | 51.3 | 60.8% | Charity |
| 16 |  Butterfly Conservation |
229k | 82.2% | 52.2 | 74.5% | Charity |
| 17 |  Royal College of General Practitioners |
227k | 40.5% | 49.8 | 68.5% | Charity |
| 18 |  CONCACAF |
216k | 3.6% | 38.9 | 19.3% | Charity |
| 19 |  The Nature Conservancy |
212k | 6.7% | 40.3 | 70.7% | Charity |
| 20 |  Associated Press |
211k | 3.0% | 42.6 | 39.0% | Charity |
| 21 |  Code.org |
187k | 1.6% | 40.1 | 64.3% | Charity |
| 22 |  Confederation of African Football |
184k | 13.9% | 40.2 | 34.2% | Charity |
| 23 |  American Ballet Theatre |
180k | 3.4% | 41.4 | 74.2% | Charity |
| 24 |  Human Rights Watch |
179k | 5.0% | 44.5 | 56.2% | Charity |
| 25 |  Make-A-Wish Foundation |
176k | 7.8% | 40.7 | 79.2% | Charity |
Want the full picture for any of these audiences?
Open any profile to see psychographics, top regions, peer affinities and demographic splits — all derived from the same anonymized signals.
Frequently asked questions
How is this Top 100 list compiled?
Rascasse aggregates anonymized search-behavior signals across United Kingdom and ranks each charity by its estimated audience size. Only entries with at least 5 measured entities are listed.
How often is the list updated?
The ranking is refreshed weekly from the latest search-behavior data and re-published as a static page.
What is the largest charity in United Kingdom?
American Student Dental Association currently leads with an estimated audience of 19M people in United Kingdom.