Lists A and B
Some works, mainly things which do not impact on the historic fabric of the building, can be done without consent. These works are identified on List A linked here.
Other works, including most repairs identified in your QI (quinquennial inspection) report can be done without a faculty, providing you obtain consent from the Archdeacon, via the Church Buildings Department, under List B, linked here.
List B Archdeacon's Consent is managed by the Church Buildings team on the Archdeacons' behalf and in the first instance you should contact the team at email@example.com or by telephone on 01353 652729. The Archdeacons' consent under List B can also be applied for using the online faculty system. Works that can be completed under List B are defined in the link above.
If the works you wish to carry out are not identified on either List A or List B, it is almost certain that a full Faculty will be required.