Buddy, it is very straight forward; for degree from UK, he will follow instructions for UK and for degree from Pak, he will follow instructions for Pak.
By the way, for Canadian Immigration, he needs to submit ECA for highest degree unless his highest degree is not equivalent to Canadian degree of same level. To get full points for education, ECA only for highest degree is enough. If his Master's degree gets equivalency of Canadian Bachelor degree, he won't get 23 points rather 21 points and if he also submits Bachelor degree for ECA, then he will get 22 points for 2 Bachelor degrees.
Since his Bachelor's degree may have an issue to be assessed by WES because he may get a note on the report that University is not recognized, therefore he should consider other assessing authorities.