Philip enlisted as an apprentice boy soldier in 1965. After completing a three year avionic apprenticeship, he served 22 years in the regular Army. During that service, he worked on 1st and 2nd line, supporting Alouette, Beaver, Gazelle, Scout, Sioux, Skeeter, Lynx Mks 1/7/9 and Islander aircraft plus bay servicing their associated avionic equipments. In 1973, he qualified as an Army Hovercraft engineer prior to posting to 200 Hovercraft Trials Sqn and worked on all aspects of mechanical, electrical and electronic equipment on SRN 6 Mk 2, SRN 6 Mk 5 and Cushion Craft Mk 7 Hovercraft until Sqn disbandment in 1974. Final tour of service was as a founder member of 667 (D&T) Sqn, was awarded the BEM for contribution to AAC trials work at the Sqn and was recruited in 1989 by Ac Branch REME to join them as SRIM coordinator at the end of Army service in 1990.
In 1990, Philip joined the Civil service as the Army SRIM coordinator and was responsible for coordinating the plausibility, design and implantation to service as appropriate of more than 600 service modifications covering every type and configuration of AAC aircraft (plus some installations for the Navy HAF Swordfish and all seven types of the then Army HAF aircraft). In 2003 awarded MBE for contribution to the defence of the realm and after 17 years service as head of Army Service Modifications resigned from the Civil Service due to the pending loss of Service Modification facility.
He retired in 2007 but in 2018 volunteered to help at HAAF.