On 11 November 2018, Wellington announced his intent to run for the Lagos' Eti-Osa Federal Constituency seat in Nigeria's House of Representatives, on the platform of Modern Democratic Party, formed in 2017.
On 23 February 2019, Wellington lost the Eti-Osa Federal Constituency Elections to Babajide Obanikoro of the All Progressive Congress.
Ahead of 2023 general election, Wellington announced that he had decamped from the Modern Democratic Party to the Peoples Democratic Party, seeking the party's ticket to again vie for the Lagos' Eti-Osa Federal Constituency seat in Nigeria's House of Representatives. In June 2022, Banky W won the Peoples Democratic Party ticket to contest as the party bearer for the Eti Osa constituency ahead of the 2023 election.
Wellington married Adesua Etomi on 19 November 2017; the couple subsequently had their white wedding performed in South Africa on 25 November 2017. He had a successful skin cancer surgery on his shoulder in 2017. In early 2021, Wellington and Adesua had a son. They kept the pregnancy a secret, catching many off guard on news of the baby's arrival.