Question to the HM Treasury:

To ask the Chancellor of the Exchequer, what estimate he has made of the potential tax revenues lost to the public purse as a result of a lack of regulation of the grey market in gambling.

The information requested is not available as HM Revenue and Customs (HMRC) does not make an estimate of the amount of revenue lost as a result of the lack of regulation of the grey market in gambling.

However, HMRC does provide an illustrative estimate of the tax gap arising from ‘other excise duties’ which includes betting and gaming duties, cider and perry duties, spirit-based ready-to-drink duties and wine duties. The aggregate estimate for ‘other excise duties’ was £520 million for the tax year 2018-19.

Tax gap statistics are available at https://www.gov.uk/government/statistics/measuring-tax-gaps