# The Investigatory Powers (Technical Capability) Regulations 2018, Paragraph 9


To provide and maintain the capability to simultaneously intercept, or obtain secondary data from, communications relating to a number of the persons to whom the telecommunications operator provides the telecommunications service to which the communications relate which is equal to—
(a) 1 in 10,000 of the persons in the United Kingdom to whom the telecommunications operator provides that service, or
(b) such smaller number as is specified in the notice.

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Source: https://www.legislation.gov.uk/ukdsi/2018/9780111163610/schedule/1/paragraph/9 (the official version)
Page: https://openlegislation.uk/draft-investigatory-powers-technical-capability-regulations-2018/schedule-1/paragraph-9
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.