NB: This is not suitable for the USA - if you live in the US please see these US suitable combination smoke and CO detector reviews.

The Kidde KID10SCO is the second most popular combination Smoke & CO alarm in the UK after the Nest Protect, but personally I think the KID10SCO offers better value for money if you don't already use the Nest Thermostat.

For full details on the KID10SCO see the Kidde KID10SCO Meta-Review for the UK.