This heavy ring of five was augmented to six bells during 1997 with the addition of a bell formerly hung at Apethorpe, Northamptonshire.

There are plans to augment the heavy ring of four to five by adding a bell formerly hung at Mawnan, Devon. Great Catworth bells are unusual in that the treble and second have strike notes only 28 cents apart instead of 100 cents.

The ring of three bells is to be augmented to four by adding a former clock bell from Halifax. The existing ring will require slight re-tuning as the ring is approximately treble, three and tenor of four. After tuning the existing treble should become the 2^nd of the ring of four.
It is hoped the work will be completed for the 150^th anniversary of the church in 2007. The Trust is supporting the scheme by donating the ex-Halifax bell.

It is hope that the ring of three bells will be augmented to four by adding a second-hand bell located by the Trust.