§ 43. The naves of the larger churches of canons, such as Bridlington, Guisbrough and Worksop, were provided with their full complement of aisles. Christchurch and St Botolph's at Colchester are conspicuous instances of Augustinian conventual naves which were aisled in the twelfth century. But it is also certain that many canons' churches, like Haughmond, had no aisles to begin with. This, as we have seen, was a point in common between them and some early Cistercian churches. The nave at Lilleshall was never provided with aisles: the same thing happened at Kirkham, where the eastern arm was fully aisled in the thirteenth century. In such cases, where a nave had been originally planned without aisles, no aisle could be added on the side next the cloister without contracting the cloister or necessitating its rebuilding. Consequently aisleless naves were left as they were or were enlarged by an aisle only on the side which admitted of extension, opposite the church. The nave with a single aisle, although it is found in some Benedictine churches, as at the priories of Abergavenny and Bromfield, is certainly characteristic of churches of canons, and may be explained on these grounds. Among Augustinian examples are the churches of Bolton, Brinkburn, Canons Ashby, Haughmond, Hexham (as planned in the thirteenth century), Lanercost, Newstead, Thurgarton and Ulverscroft: Dorchester, where the broad south aisle is a westward continuation of the original south transept, may be placed in the same category. Premonstratensian churches of the type were Coverham, West Langdon, Shap and Torre. It has been suggested that this partial addition of aisles may have been caused by the canons' desire to rival aisled Benedictine churches. Large canons' churches, however, such as those already mentioned, if they were smaller than the great Benedictine churches, were at any rate as completely planned; and it is probable that the enlargement of aisleless naves was merely the result of the inconvenience of the cramped space, especially where new altars were needed. It had nothing to do with the needs of parishioners: only four out of the ten Augustinian, and none of the Premonstratensian examples given above contained parochial altars. The enlargement was frequently achieved, as at Canons Ashby and Thurgarton, with a beautiful and perfectly unambitious effect. At Newstead, however, the builders, in projecting their western façade, seem to have felt that the one-sided plan hardly gave them an opportunity for the elevation they wanted; and so they disingenuously balanced the west front of their north aisle by building out a screen-wall, similar in design, against the west wall of the cloister buildings. This work, executed with elaborate detail, shews that no funds can have been wanting to build a south aisle, but that the sole reason which prevented this was the inconvenience which would have been caused to the cloister.