North Sea Midstream Partners (NSMP) is valued at between $1.6 billion to $1.7 billion. : Kuwait Investment Authority’s UK-based arm, Wren House, has agreed to buy oil and gas pipeline firm NSMP for around $1.7 billion from ArcLight Capital, reported Reuters. Wren House won the bid against JP Morgan, Blackstone as well as private equity fund KKR, the London-based infrastructure investment arm was being advised by Jefferies and Macquarie Capital. Additionally, the firm’s other investments in the United Kingdom include stakes in Associated British Ports, London City Airport and Thames Water.