Sky is said to lower around 600 technical jobs because a consultation with 900 people begins.
Employees who work at the locations of Leed, Livingston and Osterley must be affected.
The jobs go as part of a restructuring of Sky technology team, which moves from the creation of new platforms such as Sky Glass and Sky Stream Television to work on existing services.
If the company is moved by product development, it is assumed that teams must be easier, more focused and more flexible.
Further technical functions are also carried out in the international operation of Sky.
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Work losses are not due to individual performance, Sky News understands, but in order to better meet the needs of customers and the company.
The possibilities for internal new inquiries will be available, as will the support in the search for new jobs externally. Sky News also understands.
Sky is the owner of Sky News with Comcast the Mother Company.
A Sky spokesman said: “In recent years, Sky has launched a number of market-leading products such as Sky Glass, Sky Stream and our fiber broadband service.
“These products are now firmly established and used by millions of customers, which strengthens Sky’s reputation for innovation and great service.
“When we look ahead, we change our approach to offer customers the next generation of experience by investing in the digital first service, unbeatable content and even better performance from our products that are powered by the best of global innovation.”