Below is the list of additional documents which has been submitted.
Family Group Photo all applicants only, in total 4 members [Father, Mother, Son & Daughter both infants in arms]......Not required, but no issue even if you have submitted
Saudi Residence Proof with English translation..........It is a must document not additional, good you submitted, thumbs up
Tainting Certificate for PMI Testing purely part of JOB.....Not required, but no issue if you have submitted
Lube oil system Testing purely part of JOB....Not sure what do you mean by this?
Salary Certificate was it originally required or comes under additional documents....Good you submitted, but I hope you must have submitted in English or in True translation along with original
Salary pay slips was it originally required or comes under additional documents.....No problem..Ok
Company appointment and Contract letter was it originally required or comes under additional documents.....It is required, Ok no issues
I was a student in UK for 2 years, a copy of residence address provided....Now here is a thing, in this case I believe you must have filled the same information in your original form where CIC ask to mention the placed you have lived, secondly get start processing or taking information for obtaining PCC from the place in UK you have lived as it will be required by visa office..Till then Just chi;l and enjoy
I am member of Saudi Council of Engineer and had received a certificate mention we confirm Mr xx is Mechanical Engineer....Well honestly speaking, I don't think so it is required but no issue if you have submitted. I am also registered and have same certificate from SCE but I didn't submit
So brother, just chill and relax!