IHS Markit's purchasing managers' index for the services sector fell to 53.8 in November, down from 55.6 in October and below expectations of 55.
"Slower service sector growth comes as a disappointment after the improved performances of both manufacturing and construction in November", said Chris Williamson, IHS Markit's chief business economist. The index draws on five major indicators: new orders, inventory levels, production, supplier deliveries and the employment environment.More news: Weather: Snow and ice warning for Northern Ireland
Bolstered by the improvement in the service sector, the Caixin China Composite Output Index, which covers manufacturing and service companies, rebounded to 51.6 from October's 16-month low of 51.
British service sector growth moderated in November from a six-month high as Brexit uncertainty weighed on growth and confidence, survey data from IHS Markit showed Tuesday.More news: Lamborghini aims to release hybrid super cars
"The Caixin PMI readings in November showed the economy has maintained stability, and there was no imminent risk of a significant decline in the growth rate", said Zhong Zhengsheng, director of macroeconomic analysis at CEBM Group, a subsidiary of Caixin Insight Group.
Growth in Britain's powerhouse services sector was pegged back last month as firms hiked prices at the fastest pace for almost a decade in the face of soaring costs. Nonetheless, the rate of new business growth eased since October and was weaker than seen on average so far this year.More news: LaVar Ball pulls son LiAngelo Ball out of UCLA
On the price front, input price inflation remained the strongest since the first half of 2011, linked to higher costs for energy, food, fuel, imported items and staff salaries.