They said on the news yesterday that they were going to retain masks in schools in Lancashire. Apologies, but can't find the link.
I think the reason we're still opening up is because in other respects things have gone better than expected. Vaccine uptake was higher than expected especially in the oldest age groups, and new evidence suggests that being vaccinated reduces transmission even in people who catch it anyway post vaccine. However, we have a new variant that seems more contagious, but no signs that it evades the vaccine. So that puts us - overall - roughly where we'd have expected to be in mid May, when the roadmap was first set out.
Having said that I always thought it seemed unwise to allow nightclubs to open up a few weeks before vaccinating the 18-25 age group, and suspect the limits on indoor hospitality due to end on 21 June will be pushed back by a month or so to July.