NCC Group plc annual report and accounts for the year ended…

Cyber Security gross profit is analysed as follows:

16 month period ended 30 September 2024 £m

16 month period ended 30 September 2024 % margin

Year ended 30 September 2025 £m

Year ended 30 September 2025 % margin

% pts change

54.2 16.1 18.1

40.3% 28.4% 37.9%

UK and APAC North America

72.5 18.4 27.1

41.8% (1.5%)

20.3%

8.1%

Europe

34.7% 3.2%

Cyber Security gross profit and % margin

88.4

37.0%

118.0

34.5% 2.5%

Cyber Security gross margins increased overall by +2.5 percentage points, driven by improvements in North American and European margins, which reflect ongoing benefits from headcount reduction cost savings/improved utilisation in these markets.

12 month period ended 30 September 2024 £m

12 month period ended 30 September 2024 % margin

Year ended 30 September 2025 £m

Year ended 30 September 2025 % margin

% pts change

54.2 16.1 13.0

40.3% 28.4% 35.8% 36.6% 44.3%

UK and APAC North America

61.3 14.8 12.4

45.2% (4.9%) 22.1% 6.3% 33.8% 2.0% 37.0% (0.4%) 37.5% 6.8%

Europe

Cyber Security gross profit (excluding Crypto and DetACT)

83.3

88.5

5.1

Crypto and DetACT

9.0

Cyber Security gross profit and % margin

88.4

37.0%

97.5

37.0%

6 month period ended 31 March 2025 £m

6 month period ended 31 March 2025 % margin

6 month period ended 31 March 2024 £m

6 month period ended 31 March 2024 % margin

% pts change

26.6

40.7% 22.4% 35.6% 35.2% 44.3%

UK and APAC North America

31.4

45.4% (4.7%) 22.2% 0.2% 35.0% 0.6% 37.4% (2.2%) 29.0% 15.3%

6.4 6.4

7.4 6.4

Europe

Cyber Security gross profit (excluding Crypto and DetACT)

39.4

45.2

5.1

Crypto and DetACT

3.8

Cyber Security gross profit and % margin

44.5

36.0%

49.0

36.6% (0.6%)

6 month period ended 30 September 2025 £m

6 month period ended 30 September 2025 % margin

6 month period ended 30 September 2024 £m

6 month period ended 30 September 2024 % margin

% pts change

27.6

40.0% 34.5% 36.1%

UK and APAC North America

29.9

45.0% (5.0%) 22.0% 12.5% 32.6% 3.5%

9.7 6.6

7.4 6.0

Europe

43.9

38.0%

Cyber Security gross profit (excluding Crypto and DetACT)

43.3

36.6%

1.4%

Crypto and DetACT

5.2

47.7% (47.7%)

Cyber Security gross profit and % margin

43.9

38.0%

48.5

37.5% 0.5%

6 month period ended 30 September 2025 £m

6 month period ended 30 September 2025 % margin

6 month period ended 31 March 2025 £m

6 month period ended 31 March 2025 % margin

% pts change

27.6

40.0% 34.5% 36.1%

UK and APAC North America

26.6

40.7% (0.7%) 22.4% 12.1% 35.6% 0.5% 35.2% 2.8% 44.3% (44.3%)

9.7 6.6

6.4 6.4

Europe

43.9

38.0%

Cyber Security (excluding Crypto and DetACT)

39.4

Crypto and DetACT

5.1

Cyber Security gross profit and % margin

43.9

38.0%

44.5

36.0% 2.0%

NCC Group plc — Annual report and accounts for the year ended 30 September 2025 49

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