Good evening,
The date of the wedding could have some bearing on the regt.
If pre 1958 it could be the Devonshires, if pre 1959 then could also be Royal West Surreys.
If the medals are for Korea then the first 2 were not present so count them out. RASC were present in Korea.
If wedding is post 1965 then the RCT is also a contender.
John915