# The British Gas plc (Rateable Values) Order 1989, Article 11: Recalculation factor


The recalculation factor in relation to English gas hereditaments or Welsh gas hereditaments in respect of any relevant year is the amount produced by calculating in accordance with the formula—
T*((y-Y)/Y) where—
T has the value attributed for that class of hereditaments by article 2;
Y is the estimated length of relevant pipe-line in the country in question on 31st March 1990; and
y is the estimated length of relevant pipe-line in the country in question on 31st March in the relevant preceding year.

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Source: https://www.legislation.gov.uk/uksi/1989/2471/article/11 (the official version)
Page: https://openlegislation.uk/british-gas-plc-rateable-values-order-1989/article-11
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.