Contacted the County Council Estates Department to confirm that they are selling the school. Then the District Council Planning Department whose consent is needed for the demolition. They confirmed that the Swaythling Housing Association proposal is under consideration. Obtained name of the agents acting for the Housing Association. Then they put me onto the key man - the project manager of the company that will be responsible for demolition. I spoke to his secretary. She rang me back and told me to speak to her boss in about 4 weeks to discuss my wish to obtain the bell.
So far so good! Will return to action in 4 weeks.