Etail giant Amazon has reported a 41% uplift in sales in its second quarter to $6.57bn, driven by growth in Kindle.

For the quarter ending June 30, Amazon reported international sales, including the UK, of $2.98bn, up 35% from £2.2bn in the same period the previous year. Excluding the unfavourable impact from year-on-year changes in foreign exchange rates throughout the quarter, sales grew 38%.

Overall net income increased 45% to $207m.

Founder and chief executive Jeff Bezos said: “We’re seeing rapid growth in Kindle, Amazon Web Services, third-party sales, and retail. We’re also encouraged by what we see in mobile. In the last 12 months, customers around the world have ordered more than $1bn of products from Amazon using a mobile device.

“The leading mobile commerce device today is the smartphone, but we’re excited by the potential of the new category of wireless tablet computers. Over time, tablet computers could become a meaningful additional driver of our business.”

In the UK, Amazon launched a limited grocery offer earlier this month.