From Mobygames:
Founded in Manchester, England, Ocean was a hugely successful label up to the mid-90s, operating mainly on home computer systems. Ocean is responsible for a huge amount of arcade conversions, ports from other platforms and also original PC games. They released many film licensed games, most of which were either several-different-sections-each-loosely-resembling-a-part-of-the-film or walk-left-to-right-shoot-repeat type. Although widely ridiculed, these titles did extremely well, and helped fund their arcade conversion licenses and original products. However, once the St and Amiga scene faded, Ocean struggled to establish themselves on the newer systems, and were ultimately bought out by Infogrames.

From Wikipedia:
Ocean Software (or Ocean Software Ltd. and sometimes Ocean of America, Inc. but generally only referred to as Ocean) was one of the biggest European video game developers/publishers of the 1980s and 90s. The successor company is Infogrames UK. The company was founded by David Ward and Jon Woods and were based in Manchester. Ocean developed dozens of games for a variety of systems such as the ZX Spectrum, Commodore 64, Amstrad CPC, Atari ST, Amiga, PC, and video game consoles such as the Nintendo Entertainment System, Super Nintendo Entertainment System, Sega Master System and Sega Mega Drive.