TrueCall nuisance phone call blocker Fans of Dragons Den may well recognise the TrueCall - it's a clever little box that helps you monitor incoming calls and only accept those from numbers on a 'white list' - in much the same way that you can automatically allow or block websites and files using security software and filtering rules.

The TrueCall's trump card is that rather than nuisance callers disturbing you and you having to check your phone to see who's calling, the service can prevent the phone ringing in the first place. If the number is on a blocked list, the phone won't ring. You can add up to 100 numbers to the safe caller's list.

The TrueCall is available immediately and costs £79 inc VAT from, and other electrical retailers.

TrueCall nuisance phone call blocker