First, BBC have a story on this, including a video which shows the Solemn Mass which was celebrated for the bicentenary in the usus antiquior -- and Pugin's great, great grandson laying a wreath on his tomb:
On this same note, Fr. Ray Blake directs us toward this homily by Fr. Marcus Holden, parish priest of St. Augustine's.
Second, here is an article by Rory (Roderick) O'Donnell which appeared in a recent print edition of The Catholic Herald
Finally, said occasion was marked by a Solemn Mass at St Kevin's, Harrington St, Dublin. St Kevin's was designed by Pugin's son Edward, in collaboration with George Ashlin. The celebrant was Fr Patrick McCarthy, parish priest of the church of Ss. Peter and Paul in Cork city, another church designed by the younger Pugin. The deacon was Fr Gerard Deighan, chaplain to the Latin Mass Community in Dublin at St Kevin's, and Fr Michael Cahill was subdeacon. Fr Cahill very kindly provided a Puginesque chasuble from his collection. The Lassus Scholars sang Byrd's Mass for four voices, with motets by Byrd, Tallis, and Bruckner.
NLM may have more on this in the near future.