American Express and Ruben Tata have added an undisclosed amount to an oversubscribed series A round that initially closed at $12m in September.

Mitsui and a range of financial services providers joined an investor base already containing the likes of Dentsu, GMO and Mitsui Sumitomo Insurance.

Alphabet subsidiary Google Ventures has made its second investment in Poynt, which is preparing to commercially launch its smart payment terminal.

Citi, Starbucks and Visa are all investors but none are among the main shareholders of the payment processor, which last raised money at a $6bn valuation.

The Sberbank and Standard Bank-backed fintech developer has raised $12m to support international expansion, bringing its overall funding to more than $24m.

Recruit and three financial services firms joined an investor base already including UPS and SoftBank, taking the lending marketplace's funding to $240m altogether.

The $22.5m Berliner Volksbank Ventures unit will target Europe-based startups operating in the financial technology sector on behalf of the bank.