Depends what the products are eg insurance….please see https://www.gov.uk/hmrc-internal-manuals/vat-taxable-person/vtaxper36820
A pure agent/principal relationship should be established and invoice should ideally identify the ultimate beneficiary. That way you only pay VAT on your commission (if applicable).
i would get a VAT expert to look at the agreements/invoices etc if the amount involved in large enough.