St Michael’s interior is partitioned, reflecting the church’s dual purpose.
 The west of the building, roughly corresponding with the plan to the original 13th-century church, accommodates a hall, vestibule and the offices of the Mission to Seafarers.

The chapel is housed in the larger, eastern, part of the church.
 The east wall includes three stained glass windows designed by John Hayward in 1968.
 The main window depicts St Michael trampling a red-winged Satan.
 The windows on either side show the Virgin Mary with the infant Jesus and Adam and Eve with St Gabriel and the serpent.
 On the south wall, another stained glass window depicts Dick Whittington with his cat.

The reredos is original, with four Corinthian columns and two flaming urns.
 Before it are seventeenth-century Baroque statues of Moses and Aaron, moved here from All-Hallows-the-Great on that church’s demolition in 1894: the statues’ hands were blown off in the war and have been replaced; Moses previously held a pointer, indicating the Decalogue, while Aaron held a censer – he now raises his hands in a blessing.

Also from All-Hallows-the-Great is the elaborate chandelier, marked "Birmingham 1644".
 The organ case is a replica of the 1749 organ case taken from All-Hallows-the-Great but destroyed in the War.
 It houses a Noel Mander organ, as well as, in front of the organ gallery, a rare contemporary representation of King William III's arms.

The pulpit, communion rails and lectern date from the seventeenth century, but the rest of the woodwork was installed in the 1960s.
St Michael’s interior is partitioned, reflecting the church’s dual purpose.  The west of the building, roughly corresponding with the plan to the original 13th-century church, accommodates a hall, vestibule and the offices of the Mission to Seafarers.
The chapel is housed in the larger, eastern, part of the church.  The east wall includes three stained glass windows designed by John Hayward in 1968.  The main window depicts St Michael trampling a red-winged Satan.  The windows on either side show the Virgin Mary with the infant Jesus and Adam and Eve with St Gabriel and the serpent.  On the south wall, another stained glass window depicts Dick Whittington with his cat.
The reredos is original, with four Corinthian columns and two flaming urns.  Before it are seventeenth-century Baroque statues of Moses and Aaron, moved here from All-Hallows-the-Great on that church’s demolition in 1894: the statues’ hands were blown off in the war and have been replaced; Moses previously held a pointer, indicating the Decalogue, while Aaron held a censer – he now raises his hands in a blessing.
Also from All-Hallows-the-Great is the elaborate chandelier, marked "Birmingham 1644".  The organ case is a replica of the 1749 organ case taken from All-Hallows-the-Great but destroyed in the War.  It houses a Noel Mander organ, as well as, in front of the organ gallery, a rare contemporary representation of King William III's arms.
The pulpit, communion rails and lectern date from the seventeenth century, but the rest of the woodwork was installed in the 1960s.
St Michael Paternoster Royal