The Board of Deputies has apologised for suggesting those criticising its invitation to Angela Rayner were "sticking out your tongue, crossing your arms and stamping your feet".
The Board invited Ms Rayner, shadow education secretary and a major ally of Jeremy Corbyn, to speak at its Chanukah celebration at the House of Lords, prompting a furious response from senior figures within the community.
In a letter to the JC, barrister Jeremy Brier and QC David Wolfson, Etgar founder Jo Rosenfelder and Jewish Child's Day chair Charles Spungin said that, while "engagement and debate are vital", "honouring" Ms Rayner in this way was "sycophantic and unnecessary".
Defending the invitiation on Twitter on Friday, the Board wrote: "Clearly, shadow education secretary is important for Jewish schools.