Two landlords at the center of a legal challenge to Chancellor George Osborne’s tax changes announced in last year’s budget have confirmed that two government departments had provided an “acknowledgement of service”.

The legal challenge to the Treasury’s tax changes was launched by two landlords, Steve Bolton and Chris Cooper, who used a crowdfunding platform to raise sufficient capital to employ Omnia Strategy, a legal firm founded and chaired by Cherie Blair, to seek a judicial review of the Chancellor’s measures.

The legal battle over the Chancellor’s proposed changes to Mortgage Interest Relief follows the failure of a Petition launched by the Residential Landlord’s Association to attract sufficient support to warrant debate in Parliament.