Prior to approval, Boris’s list will be vetted by The House of Lords Appointment Committee.
However in 2020, the Commission objected to the nomination of Peter Cruddas for a peerage by Prime Minister Boris Johnson. Cruddas had donated over £1,000,000 to Johnson's Conservative Party.
Johnson nonetheless decided that the appointment should proceed, becoming the first ever prime minister to overrule an advice of the Commission – quelle surprise.
But no longer PM, Boris will have no power to overrule an objection.