My uncle is a British national. Around 8 years back he helped his distant relative living in Canada who was in a financial difficulty by giving him a loan of approx £30K with an agreement that he will repay the full principal amount along with interest in 2 years' time. The relative has not repaid the loan and has not responded to attempts to contact him.
My uncle would like to formally lodge a complaint and summon him but don't know the legal procedure as the relative is not in the UK and is not a UK national.
I would like to know if it's possible to file a lawsuit, and if so, where will it be filed.