Yn ystod y pum mlynedd diwethaf, nid yw Syr David wedi cael ei gyflogi gan blaid wleidyddol, wedi dal swydd amlwg mewn plaid, wedi sefyll fel ymgeisydd dros blaid mewn etholiad, wedi siarad yn gyhoeddus ar ran plaid wleidyddol, nac wedi gwneud rhoddion neu fenthyciadau sylweddol i blaid.
In the last five years, Sir David has not been employed by a political party, held a significant office in a party, stood as a candidate for a party in an election, publicly spoken on behalf of a political party, nor made significant donations or loans to a party.