They 'only' want £20,000. Is this a proper use of your WC council tax?
http://services.wiltshire.gov.uk/areaboardgrants/grant_detail.php?gid=3478 will take you to the application.
Whilst the scheme is a worthy one, why didn't TTC precept for it in its 2020/21 budget?
If this gets the go-ahead I presume that the parish councils can do the same thing and ask the area board for funds rather than precepting their residents.