Will Rachel Reeves spring a forecast surprise?

Fire up the forecasts. Read up on the rules. Study the spending plans. And get ready for Rachel Reeves' big day in parliament. Rupert Harrison, former chief of staff to George Osborne, joins the Inside Briefing team to preview the chancellor's spring forecast.

It’s not a budget. It’s not a fiscal event. So it doesn’t get a primetime post-PMQs slot in the Commons timetable. So what exactly is it for and how significant is this forecast for the government? What will we hear from Rachel Reeves? And what are chancellor’s options – and the risks and possible rewards?

Plus: The government's big spending announcement was on SEND reform. Do the sums add up and just what is the government trying to do?