It has often been debated whether or not the church ever possessed a central tower. There is no documentary evidence bearing on the question. It may be said that if a tower existed and fell, or was pulled down for any reason, some record would have remained; but the records connected with the building are fragmentary, and it by no means follows that the absence of record proves the non-existence of such a tower. In the case of Wimborne Minster the churchwarden's accounts contain no record of the building or of the fall of the spire, yet we know from outside testimony that such a spire did fall in 1600, and that a representation of it occurs on a seal. So here at Christchurch a seal is in existence on which the church is represented with a central tower of two storeys, the lower plain, the upper lighted by two round-headed windows and capped by a low pyramidal spire or roof with a tall cross on the summit. This is exactly what one would expect to find: a central tower is almost always found in Norman churches, especially collegiate churches; and the pyramidal roof was almost certainly the usual form in which these early towers were finished. The battlemented parapets which we so often meet with in Norman towers are in all cases more recent additions. Moreover, the massive arches and piers at the corners indicate that a tower was contemplated, even if it were never built. In the east gable of the nave as it at present exists, two round-headed windows may be seen. It is highly probable that this gable once formed part of the east wall of the tower, and when the tower was removed this wall was converted into a gable. Everything to the east of the crossing being of late fourteenth or early fifteenth century date, indicates that extensive alterations were made at that time; and if a tower and spire had previously existed, it must have been removed before this date. In the centre of the carving over the doorway leading into the Draper chantry, dated 1529, there is a representation of a church with a central tower and spire. Of course, no such steeple existed at the time this chantry was built, but it may have been a copy of some then existing representation of the building as it had appeared in former times. There are also two other carvings of angels carrying a model of a church with a central tower—one near the Salisbury chantry, one on the choir roof.
The nave is divided from the choir by a splendid rood screen 16 feet 6 inches high, 33 feet long, and 9 feet thick. The western face of this projects beyond the line joining the east walls of the two transepts; its eastern face rests against the eastern piers intended to support the central tower. It was extensively restored by Mr Ferrey in 1848, who considered that it may have been removed from some conventual church after the dissolution of the monasteries in the time of Henry VIII. and re-erected here. But there does not seem to be any real grounds for supposing that it was not expressly built for this church. Its character indicates a date somewhat late in the fourteenth century. In the centre is a narrow doorway and a passage into the choir; from the north side of this passage a flight of steps leads to the top of the loft. The base of the screen is plain; above this is a row of thirteen panelled quatrefoils on each side of the doorway—each containing a plain shield, over these a string course, then two rows of canopied niches, the upper row consisting of twelve, the lower, owing to the doorway occupying the central space, of only ten. The lower niches have pedestals, each formed of four short columns with detached bases but with large capitals, which meet one another above; these capitals are richly carved with foliage. No doubt, on the level space thus formed statues at one time stood. Woodwork screens with glazed doors and panels, made from an oak screen which formerly was placed across the south transept, run across the western ends of the choir aisles, so that when the doors of these and of the rood screen are locked, the eastern arm of the cross is entirely shut off from the rest of the church.
The Choir is entirely Perpendicular in character, and it seems to have been begun in the time of Henry VI. but not to have been completed until the time of Henry VII., and some of the carving of the stalls is of still later date. Leland says of it, "Baldwin, Earl of Devon, was the first founder, and his successors to the time of Isabella de Fortibus,[[5]] and at present the Earls of Salisbury are regarded as founders." Four large clerestory windows on either side light the choir. The wall beneath these is continued downwards to the floor, but under each window a low obtusely-pointed depressed archway is cut leading into the aisles. Between the bottom of each clerestory window and the heads of these arches the wall is panelled as with window mullions and tracery, so that the appearance from the inner side may be best understood by imagining that each window extended from floor to roof, but that the upper part alone is glazed, the lower cut away for the arch leading into the aisle, and the lower lights beneath the transom blocked up with masonry. These lower arches are more or less blocked up. The Salisbury chapel blocks up the north-eastern one completely; the sedilia, no doubt, occupied the opposite one, where now a modern altar tomb may be [!--IMG--]