Airport-style security scanners at train stations ruled out by government following stabbing attack

Will extra security be enough to calm the concern?

For commuters at King's Cross station in London - one of the busiest in the country - it will have been hard not to think of Friday night's incident in Cambridgeshire.

This morning, I caught the train with passengers heading into the capital, ready for a new week.

Pulling into the concourse, we were immediately met with a handful of police community support officers watching passengers as they spilled off the train.

Home to the Eurostar service, the presence of armed police is a familiar sight at King's Cross and London St Pancras.

But today additional officers from the Met have been deployed to major stations.

The idea is to reassure passengers they are safe on the train network.

Outside the station, we met grandparents Tracy and Darren from Yorkshire who had travelled down on Saturday morning on the same LNER service that was affected on Friday for a Marti Pellow concert at the O2.

"We were absolutely terrified, we were both really scared," Tracy told me.

"We got on the same train line that it happened the night before."

Darren and Tracy are returning to Yorkshire this morning. They are among many who would welcome additional security on the railways.

Darren says: "I'm not going to lie, it makes you worry about like your safety. Are you safe on the trains? No, you're not."

Today's additional police presence is meant to provide reassurance - but will just two days of extra security be enough to calm the concern?