v3.26.1
Intangible assets
 6 Months Ended
Jun. 30, 2026
Intangible Asset, Goodwill and Other [Abstract]  
Intangible assets Intangible assets
The carrying amount of intangible assets as at June 30, 2026 and December 31, 2025 is as follows:

June 30,
2026		December 31,
2025
(in thousands)
Cost
Customer relationships$4,114,183 $4,134,478 
Order backlog544,492 546,054 
Trade names & brands189,685 204,721 
Patient database2,457 170,511 
Technology assets116,458 151,754 
Total cost4,967,275 5,207,518 
Accumulated amortization(1,820,777)(1,873,663)
Impairment— (86,737)
Net book value$3,146,498 $3,247,118 

In the three months ended June 30, 2026 the amortization expense recognized by the Company was $50.1 million (three months ended June 30, 2025: $59.1 million).

In the six months ended June 30, 2026, the amortization expense recognized by the Company was $100.4 million (six months ended June 30, 2025: $118.0 million and year ended December 31, 2025: $227.2 million).

There were no additions to intangible assets during the six months ended June 30, 2026.