11. Twelve South Surfacepad

Twelve South

Price: £30 /$50

The SurfacePad actually sticks to your iPhone instead of clipping onto it, to keep things as thin as possible. It's really smart, and it even lets you prop your iPhone 5 up for watching videos. However, it offers little protection, doesn't close properly and can lose its stickiness after being fitted and removed just a few times.

12. Toffee Leather Slip

Toffee

Price: £25 / $40

The mottled leather of this slip case might not suit everyone, but it feels lovely. It's also impressively slimline, and holds the iPhone 5 snugly while still making it easy to get in and out. We're unconvinced by the narrow card slot on the outside, but you don't have to use it. A near-perfect little sleeve case.

13. Toffee Leather Shell

Toffee shell

Price: £25 / $40

This leather-lined plastic shell case is pretty standard as these kind of solid clip-on cases go, but it feels considerably more plastic than it does leather. As a result, you're paying a fairly premium price for something that feels like it should cost a lot less. Inelegant with a tacky feel, this toffee leather shell case is a far cry from the Toffee Leather Slip case above.

14. Cygnett TFL Tube Map

Cygnett

Price: £15 / $25

Save the 'hassle' of downloading the Tube Map app with this guide to the Underground (at least, the bit inside the Circle Line). This hard shell offers almost no protection for the front your device, but it covers the back really nicely. It's quite stiff to get on and off, and is a little thick round the edge, making it a bit of a stretch to hit the Sleep/Wake key.

15. QDos Smoothies Metallics

QDos

Price: £20 / $30

The Union Jack design we've got here is kind of a nasty 90s throwback, but there are other patterns available for this case - otherwise, it's not bad. The curved edge around the phone's rim is nice, and it's nicely slimline. There's a nasty join where the back meets the edge, though, and it's a tad pricey at £20.

16. iBattz Mojo Refuel For iPhone 5

Price: £57 / $75

Why did no one think of this before? This battery case for the iPhone 5 boasts a removable rechargeable 2200 mAh battery (two supplied), so if you're likely to be away from your charger for a long while, you can take a few spares and replace them when they're flat. Each battery gives 100% extra power, and you can swap them over without removing your iPhone from the case. It fits snugly and doesn't add too much bulk, but its detachable frame feels a little cheap and makes it awkward to reach the buttons. Still, it's a great option for regular travellers and it's the only removeable battery option around.

17. Belkin Grip Power Battery Case

Price: £90 / $100

This Belkin battery case has an almost identical shape and feel to the Mophie Juice Pack. It's every bit as comfortable and the 2000 mAh battery gives you the ability to charge your iPhone 5 from flat to full. Where it differs from Mophie's design however is that it's not a split case, where you remove the bottom quarter to fit the iPhone in. Rather it's like the iBattz in that the frame comes off the case, you slot the phone onto the Lighning connector and then place the frame back on. It's purely a matter of preference, but we prefer where Mophie has placed the USB port for charging (on the bottom).

18. Powerskin For iPhone 5

Price: £60 / $60
powerskin.co.uk

This one-piece silicone soft-touch case conceals a 1500mAh rechargeable battery, which holds enough power to extend your iPhone 5's battery life by up to 70%. It gives a good degree of protection, and only adds around 8mm to the thickness of your phone. Your earbuds might not plug into the headphones' socket unassisted, but a short adapter is supplied. PowerSkin for iPhone 5's design isn't very sympathetic to the iPhone's aesthetics, and the connecting cable is a bit fiddly, but it gives a good grip. It's just a shame that it can't compete with the charge capabilities of the other battery cases here.

19. Mophie Juice Pack Plus For iPhone 5

Price: £110 / $12

The Juice Pack has been a popular model and this latest version offers 120% more power – one full iPhone 5 charge plus a little bit extra. It's all done with the slightly beefier (2100mAh) battery compared to the Juice Pack Helium: around 10 hours of talktime and 12 hours of Wi-Fi use. With a full charge, you'll be sorted for a couple of days of heavy use. The case also features a dual-injected sleeve, engineered with a shockproof band to help buffer the impact of falls. Yes, this Juice Pack is now over £100 – a serious investment – but it really is the best mobile charging case you can hope for.