You don't need to do anything to claim your extended 5-year warranty - the serial numbers for the selected TVs included in this promotion have already been registered.
If you'd like a personalised 5 year guarantee certificate, call 020 7365 2810. Have your TV's serial number handy along with the date of purchase. Sony will then send you a certificate within 30 days of the call.
For 5 years, your TV will be covered if there is a mechanical or electrical breakdown. If the fault can't be fixed over the phone, Sony will send someone out to see what’s wrong. And if they can’t fix your TV, they will replace it.