As a matter of general interest about jurisdiction:
The English courts will hear a claim about a contract, such as a loan, entered into abroad if 1) There is a term in the contract which states that English courts are to have jurisdiction. Such a term is often inserted for the convenience of the parties and to avoid problems arising over the following point
which is 2) "the proper law of the contract is English law" AND the appropriate court is English.That's a matter of circumstances. Viewing it with as much common sense as any court can muster (in whatever country the court is) the court may hold either that the parties intended the case to be heard in England or that the case has such an English element that the fair course is for the case to be decided in England.The lay public only hear of such arguments when pop stars get divorced and squabble over whether, for example, a Californian court or an English one should hear and decide who gets what of the money and other assets but in business this question has a practical aspect when you have international trade involving e.g a British company dealing with a foreign company in goods or services in yet some other country .(You can get cases where the appropriate court is English but it is to apply foreign law (or vice versa) but here is not the place to discuss that !)
The third possibility is for a foreign court to hear a case, even in the absence of one party if that party has notice, and enter judgment and the judgment to be enforceable in an English court.That is subject to international agreements between countries and, in any case,normally only applies where the judgment is for a very substantial sum