What if a charitable trust is not incorporated?

It is not compulsory to incorporate as a board.  The trustees of a charitable trust can continue to hold the trust property in their joint names for the benefit of the charitable purpose.  Part I of the Charitable Trusts Act 1957 helps them by treating the trust property as vesting automatically in 'the trustees for the time being', as inevitably trustees will come and go over time.  This is unlike private trusts, where the vesting of the trust property has to be properly documented each time someone retires or is appointed.