Rapid review of evidence of effectiveness of mental health and well-being interventions. Among the more impactful were programmes such as CBT, mixed groups involving arts activities and family interventions.  https://whatworkswellbeing.org/wp-content/uploads/2022/05/WWW-Briefing-Evaluation-Deep-Dive-6.pdf

EEF review finds that the progress of under 5s has been adversely affected by the response to the pandemic, across all developmental areas. This effect is even more marked among children from socially disadvantaged families. https://educationendowmentfoundation.org.uk/news/new-pandemic-adversely-affected-young-childrens-development-with-fewer-reaching-expected-levels-by-the-end-of-reception-class