Why did the government backtrack on vaccine passports?

Over the weekend, the Health Secretary Sajid Javid announced that the government would be scrapping their plans for a vaccine passport system…at least for now. But what led to this change of mind? Did they not have the numbers? Are they more focused on the upcoming social care vote? Do they think the country is looking stable in regards to Covid? To discuss all these questions are Katy Balls and James Forsyth.