This refers to Hope not Hate's 'State of Hate' Report.  Link for Executive Report, PDF report, and other information.

"In polling conducted by the group in July last year, 35% of people thought Islam was generally a threat to the British way of life, compared with 30% who thought it was compatible. Forty-nine per cent of those who voted Conservative in the 2017 general election thought it was generally incompatible, and 22% of Labour voters agreed."