He was accompanied by six including Lohan Ratwatte and Uditha Lokubandara.
They are to return to Sri Lanka tonight itself, reports say.
Namal in UK
Meanwhile, Mahinda Rajapaksa's eldest son - Namal Rajapaksa is currently in UK, attending the Commonwealth Parliament Forum in UK.
On the sidelines of the forum, Namal has Tweeted a photo of himself and UK’s Secretary of State for Foreign & Commonwealth Affairs - Boris Johnson.