Lord Frost seeks to blame predecessors for Brexit issues in Northern Ireland olin McGrath from the SDLP and chair of the Executive Office Committee greets Brexit minister Lord Frost before he gave evidence to a special hearing of the Executive Office Committee of the Northern Ireland Assembly, at Stormont on July 9 2021. Picture by Pete Morrison/PA Wire Sam Blewett, PA Deputy Political Editor 09 July, 2021 16:48 Brexit minister Lord Frost has blamed negotiators under Theresa May as being responsible to a “very large degree” for issues with the Northern Ireland Protocol. The Conservative peer was grilled in person by assembly members on Stormont’s Executive Office Committee, which is scrutinising issues arising from Brexit, today.