Lightweight laptops have never been more accessible, and the under-£700 bracket has improved dramatically over the past twelve months. Qualcomm Snapdragon X processors have entered the mid-range, Chromebook Plus devices now offer genuine productivity credentials, and Intel's efficiency cores mean even budget machines last a full working day on a single charge. This guide is aimed at students, commuters, remote workers and anyone who needs a portable machine that does not punish their back or their bank account. Whether you want a slim Windows 11 workhorse with a high-resolution screen, a no-fuss Chromebook for web-based tasks, or the best-value 15-inch laptop you can buy for under £350, there is a pick here for you. Each model below has been thoroughly researched, with verified specifications cross-referenced to give you an honest, side-by-side comparison so you can buy with confidence.
Quick Verdict
Best Overall: ASUS Vivobook S 14 S3407QA. A Snapdragon X Plus chip, a stunning 2.8K display and Copilot+ PC features make it the most complete lightweight laptop in this price range.
Best Value: Lenovo IdeaPad Slim 3 15-inch (B0D83X4PGP). At around £322, it delivers a full-HD IPS screen, a capable Intel Core i3-N305 processor and solid everyday performance for the price.
Best Chromebook: ASUS Chromebook 14 CX1405CTA. A clean ChromeOS experience, a bright 1080p IPS panel and a sub-£210 price tag make it the pick for anyone who lives in a browser.
The ASUS Vivobook S 14 S3407QA is the standout pick in this entire roundup. Powered by Qualcomm's Snapdragon X Plus processor and carrying Microsoft's Copilot+ PC certification, it represents a genuine generational leap over the Intel and AMD machines that dominated this price bracket just a year ago. The Snapdragon X Plus is a 12-core ARM-based chip built on a 4nm process, and it brings impressive multi-threaded performance alongside exceptional power efficiency. In real-world use, you can expect the machine to handle office productivity, light photo editing, video calls and browser-heavy workflows without breaking a sweat, all while sipping rather than gulping battery capacity.
The display is one of the most compelling reasons to choose this laptop. At 2560x1600 resolution on a 14-inch IPS panel, text is pin-sharp and images are vibrant. The 2.8K resolution is noticeably better than the 1080p screens found on most competitors at this price, making it a particularly good choice for designers, content creators and anyone who spends long hours reading or writing. The 16:10 aspect ratio adds extra vertical screen real estate compared to traditional 16:9 panels, which is genuinely useful for documents and web pages.
Storage is generous at 1TB via a PCIe Gen4 SSD, and 16GB of RAM means multitasking is smooth. The port selection is well considered: two USB4 Type-C ports (which support DisplayPort and Power Delivery), two USB 3.2 Type-A ports, HDMI 2.1 and a 3.5mm audio combo jack. That HDMI 2.1 connection is notably better than the HDMI 1.4 found on cheaper rivals, supporting 4K at 120Hz to an external monitor.
The Copilot+ PC designation unlocks a suite of AI-powered Windows features, including real-time translation, AI image generation and enhanced search. Some of these remain more novelty than necessity, but the platform is maturing quickly and the on-device neural processing unit (NPU) means these tasks do not drain the battery the way cloud-based equivalents would.
One caveat worth noting: because the Snapdragon X Plus uses ARM architecture, a small number of legacy Windows applications may not run natively and instead rely on emulation. For the vast majority of modern software this is invisible, but niche professional tools or older games may behave unexpectedly. Check compatibility before purchasing if you rely on specialist software.
Verdict: The best all-round lightweight laptop under £700 in the UK right now. Superior display, strong performance, generous storage and a future-facing platform make it worth every penny of its price.
Pros
- 2560x1600 IPS display is significantly sharper than 1080p rivals at this price
- Snapdragon X Plus delivers excellent efficiency with strong multi-core performance
- 1TB PCIe Gen4 SSD and 16GB RAM provide ample headroom for multitasking
- USB4 ports support DisplayPort output and fast charging simultaneously
Cons
- ARM architecture means a small number of legacy Windows apps require emulation
- Qualcomm Adreno integrated GPU is not suitable for any serious gaming
The Lenovo IdeaPad Slim 3 15-inch with Intel Core i3-N305 is the best-value Windows laptop in this roundup. At around £322, it delivers a 15.6-inch Full HD IPS display, a modern eight-core Intel processor and a practical port selection, making it an attractive option for students, home users and anyone who needs a Windows machine on a tight budget. The Intel Core i3-N305 is an efficiency-focused processor built on Intel 4 process technology, and it is a meaningful step forward from the older Celeron and Pentium chips that once dominated this price bracket.
The 15.6-inch Full HD IPS display is comfortable for extended use, with accurate colours and wide viewing angles. At 1920x1080 on a 15.6-inch panel, pixel density is slightly lower than on a 14-inch 1080p screen, but text remains clear and images look natural. The larger screen size makes this a good choice for users who find smaller laptops cramped, particularly for spreadsheet work, video calls or multitasking with multiple windows side by side.
The 8GB of RAM is adequate for everyday Windows tasks, though users who regularly run demanding applications or keep many browser tabs open will notice the limitation compared to the 16GB models higher up in this guide. The 128GB UFS storage is the most significant hardware constraint: it is faster than eMMC but considerably smaller than the 512GB or 1TB SSDs found on pricier machines. Users should plan to rely on cloud storage, an external drive or a microSD card for anything beyond the operating system and core applications.
The port selection is practical: two USB-A 3.2 Gen 1 ports, one USB-C 3.2 Gen 1 port (data only, not for charging), one HDMI 1.4 output, a 3.5mm audio jack, a barrel charging port and an SD card reader. The SD card reader is a useful inclusion for photographers and content creators, and the HDMI output allows direct connection to a TV or monitor. Note that the USB-C port does not support charging, so you will need to use the barrel charger.
Windows 11 Home ships in S mode, which restricts app installation to the Microsoft Store by default. Switching out of S mode is free and takes less than a minute, but it is a one-way process. Most users will want to switch immediately to access the full range of Windows applications, including browsers like Chrome and Firefox.
At 3.41 lbs (approximately 1.55kg), the IdeaPad Slim 3 15 is not the lightest machine in this roundup, but it is reasonable for a 15.6-inch laptop. Battery life is rated at around eight hours, which is sufficient for a full working day of light tasks.
Verdict: The best-value Windows laptop under £700 for users who need a larger screen and are comfortable managing storage carefully. The IPS display and modern processor make it a much better buy than older budget machines at a similar price.
Pros
- 15.6-inch Full HD IPS display offers comfortable extended viewing at a sub-£350 price
- Intel Core i3-N305 is a modern eight-core chip that outperforms older Celeron and Pentium alternatives
- SD card reader and HDMI output add practical connectivity for everyday use
Cons
- 128GB UFS storage is very limited for a Windows machine and requires careful management or cloud reliance
- USB-C port is data-only and does not support charging, limiting flexibility
- Windows 11 S mode must be manually disabled to install non-Store applications
Buying Guide
Weight and Portability
If portability is your primary concern, weight is the most important specification to check. A laptop weighing under 1.5kg is generally considered genuinely lightweight and comfortable to carry in a bag all day. To answer a common question: 1.5kg is not heavy for a laptop by absolute standards, but it is at the upper end of what most people consider comfortable for daily commuting. Anything above 1.8kg starts to feel burdensome over longer distances. The 11.6-inch Chromebook CR1100 and the 14-inch machines in this roundup will typically weigh less than their 15.6-inch counterparts, though exact weights vary by model. Always check the manufacturer's listed weight before purchasing if portability is a priority.
Processor Choice
The processor determines how capable your laptop is for demanding tasks. In this price range, you will encounter Intel N-series efficiency chips (good for everyday tasks, excellent battery life), Intel H-series performance chips (more powerful, shorter battery life), Qualcomm Snapdragon X ARM chips (excellent efficiency and performance balance, some app compatibility caveats) and Intel Celeron chips (entry-level, best suited to ChromeOS). For Windows users who need to run demanding software, the i5-12450H in the Lenovo IdeaPad Slim 3 14 is the strongest option. For all-round balance, the Snapdragon X Plus in the ASUS Vivobook S 14 is hard to beat.
RAM and Storage
For Windows laptops, 16GB of RAM is the comfortable modern standard for multitasking. 8GB is workable but may feel limiting as Windows 11 and applications grow. For Chromebooks, 4GB is adequate for typical use, but 8GB (as found in the Chromebook Plus) is noticeably smoother. Storage matters more on Windows than ChromeOS: a Windows machine with 128GB will fill quickly, whereas a Chromebook user who relies on Google Drive can manage comfortably with 64GB of eMMC.
Display Quality
Always choose an IPS panel over a TN panel if the option exists at a similar price. IPS panels offer wider viewing angles, more accurate colours and better contrast. Resolution matters too: 1080p is the minimum acceptable standard for a comfortable daily experience, while 2.8K (as on the ASUS Vivobook S 14) is noticeably sharper for reading and creative work.
ChromeOS vs Windows
ChromeOS is an excellent choice if your work revolves around Google Workspace, web apps and Android applications. It is fast, secure and low-maintenance. Windows is necessary if you need specific desktop software, local gaming, advanced creative tools or compatibility with corporate IT environments. Do not buy a Chromebook expecting to run Windows applications: the two ecosystems are fundamentally different.
Ports and Connectivity
Check that the laptop has the ports you actually need before purchasing. USB-C with Power Delivery allows charging from a slim cable and is increasingly standard. HDMI output is useful for connecting to TVs and projectors. An SD card reader is valuable for photographers. USB-A ports remain important for legacy peripherals such as mice, keyboards and USB drives. If a laptop lacks a port you need, factor in the cost of a hub or adapter.
The ASUS Vivobook S 14 S3407QA is the clear overall winner in this roundup. Its Snapdragon X Plus processor delivers a compelling combination of performance and efficiency that Intel and AMD rivals at this price cannot match, and the 2560x1600 IPS display is genuinely class-leading for a sub-£700 machine. The 1TB SSD and 16GB RAM mean you are unlikely to feel constrained by the hardware for several years, and the USB4 port selection is future-proof. If your budget stretches to £599.99, this is the laptop to buy.
For those on a tighter budget, the Lenovo IdeaPad Slim 3 15-inch at around £322 is the best-value Windows machine in the group: a modern processor, a full-HD IPS screen and a practical port selection at a price that leaves money in your pocket. Chromebook buyers should look at the ASUS Chromebook 14 CX1405CTA first, with its IPS 1080p display and Intel Core 3 N355 chip representing excellent value at around £205. The Chromebook Plus 15 is worth considering if you specifically want a larger screen and the enhanced AI features of the Plus platform. The Chromebook 11 CR1100 is a niche pick best suited to younger users or educational settings where the three-year warranty justifies the premium over the cheaper CX1405CTA.
