BG Group shares will trade on the London Stock Exchange for the last time tomorrow, marking an end to the company's 19-year history.
BG today said that the High Court of Justice in England and Wales has given the final rubber-stamp to what will be one of the oil industry's biggest deals ever.
The Shell/BG mega-merger will then become effective from Monday, when the court order is delivered to the registrar of companies.
BG’s chief executive Helge Lund will also leave the business, having been in the role for about a year.
"I am delighted that the combination has been sanctioned today," BG's chief executive, Helge Lund, said in a statement.
"I would like to thank our shareholders and they will continue to benefit from BG's assets and capabilities as part of the combined business, which I am confident has a strong future."
"I would also like to thank all of our employees, and contractors, both personally and on behalf of the board for their service to BG."