Ringing 2030 If bellringing was regarded as one overall 'heritage asset', made up of the ringing infrastructure and the ringers, and you were in control of all of it (in particularly you owned all the bells), you'd definitely get rid of the bells that are no good and never get used and sell them to raise money to invest in your places which have the capability of supporting ringing. It's a bit like pruning a rose I suppose.
As ringers we never seem to want to give up on a ring of bells or think they're beyond hope. The argument is that someone might restore the bells, a band might be taught, the congregation might just double, etc. There are instances of this happening which perpetuate the argument, but not many really.
I discussed this with Diana Evan who is Historic England's lead on church and cathedrai buildings and she got it completely. She thought it was probably something that could only be done on a Diocese by Diocese basis.
Another consideration though is what old bells are really worth as I understand from those who know more about bell founding than be that many older bells aren't made of particularly good metal, so would be quite difficult to scrap. By the time you've got the bells out safely, and compensated the donor church, it might have been worth the effort.