Revenue increased 11% on a constant-currency basis during the first half, while underlying operating profit rose 17.1% and the underlying operating margin improved to 7.3%. Data centers rose to 9% of group revenue, while weaker multifamily residential activity remained a headwind. Story ContinuesData centers became Keller's largest group subsector, representing 9% of group revenue, compared with 3% in 2025. About Keller Group (LON:KLR)Keller Group plc provides specialist geotechnical services in North America, Europe, the Asia-Pacific, the Middle East, and Africa. The article "Keller Group H1 Earnings Call Highlights" was originally published by MarketBeat.