# The Non-Domestic Rating (Northern Line Extension) Regulations 2015, Regulation 4: Period of designation


The designations made by regulation 3 and Schedule 1 take effect on 1st April 2016 and remain in effect for a period of 25 years beginning with that date.

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Source: https://www.legislation.gov.uk/uksi/2015/354/regulation/4 (the official version)
Page: https://openlegislation.uk/non-domestic-rating-northern-line-extension-regulations-2015/regulation-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.