The production of fully illustrated and luxurious texts of the Apocalypse, produced specifically for a lay audience, is perhaps the most characteristic and substantial achievement of English manuscript illumination in the second half of the 13th century and is certainly without parallel on the continent. One of the earliest of the series is the Trinity Apocalypse, which with its use of deep saturated colours and sophisticated design represents, without doubt, the most outstanding and beautiful example of the entire series.

Reference: CIL1