okay now UCAS is a organization i think which helps students in their studies.... They have specific courses... You'll have to browse through their site.. Im not really sure abt them....
As for certificates.. i dont think u need emm... Cuz Canadian universites want SAT or IELTS .. American universities want TOEFL and Uk i think i think.. either need TOEFL or SAT.
Like for A'level students they dont need anything.. as their exams are through British council so no problem.. Fsc students i think need as i said either TOEFL or SAT.
Now as this HR uncle needs your UCAS score.. that means you'll have to sign up with UCAS.
UCAS Home Page
Btw.. why dont you directly apply at the university you want to get into?