Question to the HM Treasury:

To ask Mr Chancellor of the Exchequer, what estimate his Department has made of the potential future value of shale gas reserves to the public purse; and if he will make a statement.

The independent Office for Budget Responsibility (OBR) produces forecasts for UK oil & gas tax receipts. Its latest Economic and Fiscal Outlook was published on 22 November 2017:

http://obr.uk/efo/economic-fiscal-outlook-november-2017/

The OBR also produces regular reports on wider trends in the economy that may affect tax revenues in the longer term.