Portuguese to English Bus/Financial Finance (general) Bank contract

I am editing the translation of this document and the translator has translated this term to 'associated customer'. I don't know from my experience if that's correct and can't seem to find it used online according to the definition given in this contract. My translation is to UK English. Can anyone help? How do you differentiate between the 'cliente' and the 'cliente associado' in UK English?

And I probably should have given this definition in my last question, sorry!

g) ***Clientes associados*** são pessoas físicas ou jurídicas coligadas ou afiliadas ao CLIENTE, cujas Operações poderão ser vinculadas ao CONTRATO pelo CLIENTE;