Amazon is expanding its line-up of super cheap tablets with new versions of its entry level device being added from 28 April.

The Amazon Fire tablet impressed us greatly ahead of Christmas last year as it offers a lot of bang for your buck. At just £50 it is great value for money considering the mid-range specifications.

The tablet comes with a 7-inch 1024 x 600 display, 1.3GHz quad-core processor, 2-megapixel rear camera and up to seven hours of battery life.

Now Amazon is introducing a version with more storage for £60. You can still buy the existing tablet, which comes with 8GB of on-board storage, but the enhanced edition comes with 16GB for just a tenner more.

Both come with a microSD card slot to expand that by up to a further 128GB.

READ: Amazon Fire tablet review: Who needs Hudl when there's this for £50?

In addition, Amazon is launching new colours. The original was only available in black, but you will soon be able to buy one in orange (tangerine), blue or pink (magenta) too.

Pre-orders for the new colours and increased storage options are available on now.

Amazon has also improved its Fire Kids Edition tablet. That now comes with 16GB of storage as standard. It retails for £99 and is accompanied by Amazon's worry-free returns guarantee. If your child breaks it in its first two years, it will be replaced with no questions asked.

It also comes with a one-year subscription to Fire for Kids Unlimited, which provides unlimited access to kids content, including apps with no extra purchases required, eBooks and kids videos on Amazon Video.