The Services Producer Price Index (SPPI) are primarily a suite of individual price indices that provide information on price change for a limited range of service industries. Each SPPI captures quarterly changes in the price received for services provided by UK businesses to other UK businesses and Government. These individual price indices are also aggregated together to create a 'service industry' SPPI with limited coverage.

http://www.ons.gov.uk/ons/dcp19975_301032.xml