The answer is: right here. This is a two-page guide jam packed full of the UK's top mobile phone deals on contract at the cheapest possible prices.
We've prioritised the lowest upfront fees and the best data allowances.
This page contains TechRadar's top 10 ranked phones, each with links to the best deals available right now, along with links through to our 'compare and filter' pages where you can build your own customised deals - try it, it's awesome!
Page two is a second list of all the best cheap mobile phone deals currently available - phones that we'd still recommend you buy, but for rock bottom prices.
Top mobile phone deals in the UK: April 2015
Samsung Galaxy S6
Simply the best phone in the world this year
OS: Android 5 | Screen size: 5.1-inch | Resolution: 1440 x 2560 | Memory: 3GB |Storage:32GB/64GB/128GB | Battery: 2550mAh | Rear camera: 16MP | Front camera: 5MP | Ranked: #1 in TR's best mobile phones chart
TechRadar's favourite and top-ranked phone right now is the Samsung Galaxy S6. It's got all the features you'd want in a brand new market-leading smartphone, as well as fantastic looks, super build quality and a really great camera. This is not a cheap phone but if you take a look below you'll see we've found some surprisingly good deals.
Apple iPhone 6
Probably the best iPhone Apple has ever produced
OS: iOS 8 | Screen size: 4.7-inch | Resolution: 1334 x 750 | Memory: 1GB | Storage:16GB/64GB/128GB | Battery: 1,810mAh | Rear camera: 8MP | Front camera: 1.2MP | Ranked: #2 in TR's best mobile phones chart
Our second-favourite phone is the iPhone 6 - certainly the best phone Apple has ever created and definitely worth the extra money over an iPhone 5S. The larger screen, better keyboard and improved battery life make it a much more useable device than ever before.
HTC One M9
Looks fantastic and has all the features to match
OS: Android 5 | Screen size: 5-inch | Resolution: 1920x1080 | Memory: 3GB | Storage: 32GB |Battery: 2840mAh | Rear camera: 20.7MP | Front camera: 4MP | Ranked: #3 in TR's best mobile phones chart
The HTC One M8 was our favourite phone for the whole of 2014, but this year's entry theHTC One M9 is down at number 3 - still a highly commendable position given the immense competition. The camera is good, though not as brilliant as the two phone above, and everything else about the M9 is right up there with the very best money can buy.
Samsung Galaxy S6 Edge
Sexy looks that'll make everyone stop and take 'note'
OS: Android 5 | Screen size: 5.1-inch | Resolution: 1440 x 2560 | Memory: 3GB | Storage:32GB/64GB/128GB | Battery: 2560mAh | Rear camera: 16MP | Front camera: 5MP | Ranked: #4 in TR's best mobile phones list
The Samsung Galaxy S6 Edge is practically the same as the S6 at the top of this page but with a crucial difference - the screen curves down on both sides. It makes the phone look truly stunning and also enables a few nifty new features that aren't possible on flat-screened phones. Check out the deals we've found...
LG's flagship phone looks, feels and performs excellently
OS: Android | Screen size: 5.5-inch | Resolution: 2560 x 1440 | Memory: 2GB/3GB | Storage:16GB/32GB | Battery: removable 3,000mAh | Rear camera: 13MP | Front camera: 2.1MP |Ranked: #5 in TR's best mobile phones list
We reckon the number 5 smartphone in the world right now is the LG G3. Like its predecessor, if you're after power and precision (perhaps over design and form) then this is a winner. The camera and battery combo is superb, and the improved user interface will woo you immediately.
Sony Xperia Z3 Compact
Has all the features of the Z3 but in a smaller package and price
OS: Android | Screen size: 4.6-inch | Resolution: 1280 x 720 | Memory: 2GB | Storage: 16GB |Battery: 2,600mAh | Rear camera: 20.7MP | Front camera: 2.2MP | Ranked: #6 in TR's best mobile phones list
If you are looking for a feature-packed phone that looks fantastic and performs brilliantly, then you'll be very pleased with the Sony Xperia Z3 Compact. It's actually a smidgen smaller than the iPhone 6, which means it's still packing a good-sized screen but it's more manageable for small hands.
Samsung Galaxy Note 4
Samsung's latest Note is powerful and feature-packed
OS: Android | Screen size: 5.7-inch | Resolution: 2560 x 1440 | Memory: 3GB | Storage: 32GB | Battery: removable 3,220mAh | Rear camera: 16MP | Front camera: 3.7MP | Ranked: #7 in TR's best mobile phones list
The Galaxy Note is the phone that made big screens fashionable and it's still the best phablet available today. The Samsung Galaxy Note 4's 5.7-inch screen is simply gorgeous, extending almost to the edge of the handset so you can still hold it on one hand comfortably.
iPhone 6 Plus
The biggest iPhone ever is the most visually stunning to date
OS: iOS 8 | Screen size: 5.5-inch | Resolution: 1920 x 1080 | Memory: 1GB | Storage:16GB/64GB/128GB | Battery: 2,915mAh | Rear camera: 8MP | Front camera: 1.2MP | Ranked: #8 in TR's best mobile phones list
The iPhone 6 Plus is the best looking phablet around. Its specs don't match the Android powerhouses like the HTC One M8 and Samsung Galaxy Note 4, and its sheer size does make it tricky to hold, but there's no denying Apple's beautiful 5.5 incher is a winner.
Sony Xperia Z3
A great all-rounder that offers great performance - and it's waterproof
OS: Android | Screen size: 5.15-inch | Resolution: 1920 x 1080 | Memory: 3GB | Storage:16GB/32GB | Battery: 3,100mAh | Rear camera: 20.7MP | Front camera: 2.2MP | Ranked: #9in TR's best mobile phones list
Sony has been releasing new phones thick and fast in the last few years, and the latest in a long line of flagship handsets is the Sony Xperia Z3. It's got all the high-end specs you'd want, and the screen is the brightest of any in our top 10.