To help us provide you with free impartial advice, we may earn a commission if you buy through links on our site. Learn more

David Ludlow

David has been fascinated by technology since he first set eyes on the ZX Spectrum 48K. A fan of smartphones, tablets and home automation, he also specialises in home networking. David has worked in tech publishing for more than 20years, working on PCW, Computer Shopper and launching Expert Reviews in 2010. 

Recent articles by David Ludlow

iPhone 7 patent
Patently obvious – the iPhone 6S won't have these features
Mobile phones

A patent doesn't mean that Apple's going to actually use them in the iPhone 6S or other upcoming phone. We find out what they really mean

BT Mini YouView Box hero shot
BT Mini YouView Box review - free with TV Starter
Media streamers PVRs

A neat way to give an old TV a smart upgrade, but the the BT Mini YouView Box has no media streaming and no Wi-Fi

£100
Enter Sumif function into Excel
How to use the Excel Sumif formula
Software

Adding up the value of spreadsheet cells based on whether they match criteria using Sumif can really help you stay organised

Enter Countif function in Excel
How to use the Excel Countif formula
Software

Want to know how many records of a certain type you have in an Excel spreadsheet? You need Countif

Enter data with Validation turned on
How to use Excel data validation
Software

Keeping an Excel spreadsheet with consistent values is easy thanks to Excel’s data validation feature

Getting started with IFTTT
How to use IFTTT recipes
Mobile phones

Create IFTTT recipes to automate practically everything on the internet or your smartphone

iPhone Gmail Delete mail message
How to delete, not archive, Gmail messages on iPhone
Mobile phones

Fed up of only seeing an Archive option on your iPhone’s email? Don’t fret, we show you how to delete instead

How to use Handoff on iOS 8 and Yosemite
Mobile phones

You can start a task on one Apple device and finish it on another with Handoff - we show you how to use it on iOS 8 and Yosemite

Download Windows 8.1 ISO for reinstall
How to download & make Windows 7, 8 & 8.1 installation discs
Software

Create your own full Windows disc, by downloading the Windows 7, 8 or 8.1 ISO legally and for free

OS X 10.10 Yosemite
Apple OS X 10.10 Yosemite review
Operating systems

OS X Yosemite is a great update that tightens the integration between Apple’s mobile and desktop operating systems