Tullow Oil has completed the purchase of the first of two packages of North Sea gas assets and related infrastructure which it agreed to acquire from BP for a maximum of £201 million (€255 million) following BP's takeover of Arco last April. The so-called Murdoch-Boulton Package in the southern North Sea comprises interests in three licences held by BP in quadrants containing two producing fields, two discoveries and a number of explorations prospects and leads.