Talk Boost KS1 is a targeted intervention for 4-7 year old children with language that is delayed, including children in Reception classes. The programme is delivered in primary schools by classroom teachers and teaching assistants and provides a structured programme that boosts children’s progress in language and communication by an average of 9 - 18 months after a ten week intervention.
https://ican.org.uk/training-licensing/i-can-programmes/talk-boost-ks1/