T1D Index estimates for 2025 · IDF Europe region · High-Income country
An estimated 347,869 people are living with type 1 diabetes in the United Kingdom in 2025. Each year about 10,998 people are newly diagnosed and 3,394 people with T1D die. A further 79,726 people would be alive today had they not died early from type 1 diabetes.
People living with T1D
347,869
New diagnoses this year
10,998
Deaths this year
3,394
Missing people
79,726
Expected age at death, diagnosed at 10
69.6years
How many people have type 1 diabetes in the United Kingdom?
347,869 people in the United Kingdom are living with type 1 diabetes in 2025, or 500.3 per 100,000 people. That is higher than the Europe average of 298.6 per 100,000 and higher than the global average of 115.5. The United Kingdom has the 5th-largest number of people living with T1D of the 202 countries in the T1D Index, and the largest of the 53 countries in the IDF Europe region.
For every 100 people living with T1D in the United Kingdom, another 23 are missing: people who would be alive today had they not died early from T1D.
Is type 1 diabetes increasing in the United Kingdom?
The number of people living with T1D in the United Kingdom went from 159,488 in 2000 to 347,869 in 2025, and is projected to rise to 429,678 by 2040 (+24%).
People living with type 1 diabetes in the United Kingdom, 2000–2040. Solid line: modelled estimates to 2025; dashed line: projection to 2040.
Type 1 diabetes in the United Kingdom over time, all ages
Year
Living with T1D
New diagnoses
Deaths
Missing people
2000
159,488
8,937
2,456
63,460
2010
233,204
11,700
2,539
66,921
2020
313,002
10,234
3,831
73,424
2025
347,869
10,998
3,394
79,726
2030 (projected)
379,856
11,317
4,435
86,273
2040 (projected)
429,678
11,389
4,909
102,832
What is the life expectancy with type 1 diabetes in the United Kingdom?
A 10-year-old diagnosed with type 1 diabetes in the United Kingdom today is expected to live to 69.6, compared with 82.0 for a 10-year-old without T1D: 12.3 years of life lost. Counting years lived with complications as well, T1D costs 23.2 years of healthy life at today's level of care. If everyone received timely diagnosis, insulin and test strips, and insulin pumps and CGMs, that loss would fall to 14.2 years.
Healthy years of life for a 10-year-old diagnosed with T1D in the United Kingdom, as each level of care is added in turn
Level of care
Healthy years restored
Healthy years of life
Healthy years still lost
Current level of care
–
58.7
23.2
+ Timely diagnosis for everyone
–
58.7
23.3
+ Insulin and test strips for everyone
+1.6
60.3
21.7
+ Insulin pumps and CGMs for everyone
+7.4
67.7
14.2
How does the United Kingdom compare?
Type 1 diabetes in the United Kingdom compared with the Europe region and the world, 2025
2025
United Kingdom
Europe
World
People living with T1D per 100,000
500.3
298.6
115.5
New diagnoses per 100,000
15.8
12.1
6.2
Missing people per 100 living with T1D
22.9
30.5
43.0
Expected age at death, 10-year-old with T1D
69.6
62.1
51.3
Expected age at death, 10-year-old in general population
All figures are T1D Index version 3.0 estimates for all ages. Missing people are those who would be alive today had they not died early from type 1 diabetes. Expected age at death is for a 10-year-old. See Data & Methods for how the estimates are made and the peer-reviewed publications behind them.
