British health tech startup Babylon Health said on Thursday it has agreed to go public through a merger with a blank-check firm led by former Groupon chief Rich Williams, valuing the combined company at a pro forma equity value of $4.2 billion.

Babylon will merge with Alkuri Global Acquisition Corp KURI.O and will trade on the Nasdaq under the new ticker symbol "BBLN".

(Reporting by Sohini Podder in Bengaluru; Editing by Krishna Chandra Eluri) ((sohini.podder@thomsonreuters.com;))