To who? The whole point would be solve the issue of paypal / payment processors not wanting to work with an
offshore company (lets say
seychelles but any really).
Although you are the UBO of both companies, only the
UK company which processes payments will have that info publicly known.
Although
CRS / AEIO (or whatever it is) / other standards may give you being the UBO of the
seychelles company to governments / tax offices, this isn't public. So paypal /
stripe / payment processes the uk payment front compny uses will never know.