You can find the full texts of the liturgical texts for the Feast of St John Henry Newman, approved for use in the dioceses of England and Wales, including the texts for the Office of Readings,
on the Website of the Liturgy Office of the Bishop’s Conference of England and Wales
First Reading: 1 Corinthians 2:10–16: We are those who have the mind of Christ..
Resp. Ps. Psalm 144: 8-14 R. v.(17): The Lord is just in all his ways..
Alleluia: Hebrews 4:2 The word of God is alive and active; it can judge secret emotions and thoughts.
Gospel: Matthew 13:47-52: Things both new and old.