Kammala jumla mai zuwa: Parkes tsohon shugabanci ne kuma yanzu shugaban rayuwa na ƙungiyar sadaka ta Cruse Bereavement Care. Ya yi aiki a matsayin mai ba da shawara da mai ba da shawara bayan bala'in Aberfan (21 ga Oktoba, 1966), hadarin jirgin sama na jirgin saman Invicta International Airlines Flight 435 a Switzerland (10 ga Afrilu, 1973),
Wutar da ke kulob din ƙwallon ƙafa na Bradford (Mayu 11, 1985), da jujjuyawar MS "Herald of Free Enterprise" a Belgium (Maris 6, 1987), da fashewar jirgin Pan American Flight 103 a kan Lockerbie (Disamba 21, 1988). A gayyatar UNICEF, ya yi aiki a matsayin mai ba da shawara wajen kafa Shirin Gyara Trauma a Ruwanda a watan Afrilu 1995. Bayan gayyatar gwamnatin Burtaniya, ya taimaka wajen kafa wani shirin tallafi don taimakawa iyalai daga Burtaniya wadanda aka fitar da su bayan hare-haren ta'addanci na 11 ga Satumba, 2001, a Birnin New York. A watan Afrilu na 2005, an tura Parkes ta Taimakawa Hospices tare da Ann Dent zuwa Indiya don tantance bukatun halayyar mutanen da suka rasa rayukansu a girgizar kasa da tsunami na Tekun Indiya na 2004.