The purchasing managers' index (PMI) from IHS Markit/CIPS sank to 50.4 in November, down from 52.2 in October. These companies belong to five sectors namely consumer services, transport & storage, information & communication, financial & insurance and real estate & business services.
Britain's hugely important services sector is struggling in the face of Brexit, a closely watched survey showed Wednesday, as Prime Minister Theresa May strives to get the support of Parliament for her deal with the European Union. That means the index is just above the 50-point level that separates expansion from contraction on a 100-point scale.
Adding to the gloomier outlook and concerns economic growth in the bloc is past its peak, other forward-looking indicators were also more downbeat.
The sub-index for employment showed expansion for a 15th straight month, though job-creation was at the slowest pace since September.
Pollyanna De Lima, a principal economist at IHS Markit, said the welcome news "complements similar upbeat results" in the manufacturing industry, issued earlier in the week, and suggest the private sector economy "will provide impetus" to India's Q3 fiscal year 2018 GDP results.
On prices, the survey noted that operating expenses in the service sector continued to increase, and in order to protect margins, service providers lifted their selling prices again in November.
With manufacturing on the rise, the composite (manufacturing+services) PMI output index jumped to 54.5 in November from 53 in October.
"Business optimism is running at its lowest since late 2014, adding to downside risks for growth as we move into 2019", Williamson said. This is the fastest expansion in private sector activity since October 2016.
"November saw India's economy spring back to life, as manufacturers and service providers registered stronger increases in business activity amid an upsurge in demand", the survey report said.
The services sector accounts for about 80% of the United Kingdom economy.