The National Union of Teachers (NUT) and the National Association of Schoolmasters Union of Women Teachers (NASUWT), the biggest teaching unions, are gathering for their annual meetings where they are expected to speak out about pay and Ofsted inspections.
Education Secretary Michael Gove could face another vote of no confidence following a similar move by the the Association of Teachers.
But, according to the Telegraph, Gove is refusing to bow to pressure over the demands of unions, saying “the direction of travel is now fixed” over teachers’ pension and pay arrangements.
The NUT and the Nasuwt have already announced joint strike plans.
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The Prime Minister said Parliament will be given a binding vote on the final deal, but said the result will not stop Britain leaving the EU.
Officials from the train drivers' union Aslef will meet managers from Southern Railway, whilst the RMT will meet separately with Acas.
Last week the organisation wrote on Twitter: "If Obama grants Manning clemency Assange will agree to US extradition".