Julie,
I would agree with Derrick that working tax credit is not necessarily a qualifying benefit for SMI purposes.
I am sorry to tell you that the changes from DWA to DPTC to WTC(with disability element) can NOT be considered as only changes of name.
I am aware that Scottish legislation was updated to include DPTC as a qualifying benefit for SMI purposes, although I am not aware of equivalent legislation for England & Wales.
Unless someone is aware of any legislation whereby WTC (with disability element) is a qualifying benefit, then you have no power to treat it is such.
I am, also a bit concerned about position in England & Wales in relation to DPTC, does anyone know of amending legislation???
