The trusts have evolved over the last century, developing their outputs to address continuing and changing social pressures and political issues.
The four trusts today are:
Joseph Rowntree Charitable Trust (its name is unchanged since 1904).
Joseph Rowntree Foundation (formerly the Joseph Rowntree Memorial Trust, and before that the Joseph Rowntree Village Trust).
The Joseph Rowntree Reform Trust Ltd (formerly the Joseph Rowntree Social Service Trust Ltd)
Joseph Rowntree wrote a revised Memorandum in 1919 that is of interest in relation to the New Towns scheme.