另一方面,戴維德又促成立法議會在1958年6月通過修訂,放寬警方入屋搜查的限制,讓他們只須取得由不低於助理警司職級的警務人員發出的手令,便可進入懷疑涉及犯罪活動的處所展開搜查。[44]有關做法比起以往要先取得一名太平紳士簽發的拘票,並要向太平紳士作出宣誓的程序來得更為簡便和快捷,方便警方更具效率地採取行動。[44]不過,儘管戴維德認為這都是在非常時期打擊罪案的必要措施,但有持反對意見的人士質疑有關做法不單有損人權,形式也類似於針對馬共而制定的《維護公眾安全條例》(Preservation of Public Security Ordinance)等各條緊急法例。[43]
戴維德當年由香港調任新加坡時,英政府指有關調任屬借調性質,強調他在1959年6月卸任布政司後,便會返回香港出任輔政司。[34]不過,在1959年4月,殖民地部卻宣佈他會出任英屬東非高級公署行政官兼東非中央立法議會當然官守議員。[48]在新加坡自治邦成立後,他於1959年8月抵達東非肯雅內羅畢履新,接替退休的布魯斯·赫特爵士(Sir Bruce Hutt)。[48]
為配合坦噶尼喀地區在1961年12月9日獨立為坦噶尼喀,三地代表在1961年6月與英政府達成協議,決定東非高級公署在坦噶尼喀地區獨立後改組為東非共同服務組織,而戴維德原本擔任的行政官一職,則改名為秘書長。[50]成功改組後不久,戴維德在1962年4月退休,秘書長一職遂由來自迦納的A·L·阿杜(A. L. Adu)接任。[51]在東非任職期間,戴維德還在1961年的新年授勳名單中,獲英廷授予KBE勳銜,成為爵士,以肯定他多年來在殖民地的服務。[52]
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