The family of a missing father-of-three are expanding their search from Midlothian down to the Scottish Borders.

Ross Taylor, 30, disappeared from his home in Mayfield on Sunday afternoon.

CCTV later captured a man matching his description walking along a street in Pathhead a few miles away.

Mr Taylor's partner, Laura D'Arcy, told STV News that she hasn't been able to think straight since his disappearance.

She said: "You get up, you go again, and then you try to get some sleep. It's draining.

"It's the adrenaline that's pushing me through.

"I can't even think straight now - it's 24/7. I just keep thinking 'where is he?'."

Ms D'Arcy, 30, described Mr Taylor's actions as "out of character".

She added: "Just like anyone else he would go out for a walk with the dogs. This time he left the dogs.

"My main focus is to try and find him. But I wouldn't expect this from him, which makes it harder trying to think of where he could go."

Ms D'Arcy praised the "outstanding" efforts of the police and all those who have helped to search for Mr Taylor.

On Monday, mountain rescue teams combed a large area of woods and open ground around the village of Newbattle.

Alongside police officers, 32 mountain rescue personnel were involved along with search and rescue dogs, and a drone search team.

Mr Taylor's workmates from energy firm SSE have also been scouring the surrounding areas in their vans.

Ms D'Arcy said: "It's been outstanding. Everyone has come together and has been helping.

"My walls are covered in maps - we're marking off where we've checked.

"The police are still doing their searches, but we are now looking at heading to the Borders."

Drivers who use the A68 and A7 are being urged to check their dashcam footage just in case they've recorded Mr Taylor in the area.

Ms D'Arcy, who has three young children with Mr Taylor, said the situation is upsetting for the family.

She added: "The baby is starting to roll over - he should be here to see this."

At a police press conference on Wednesday, Ms D'Arcy appealed directly to Mr Taylor.

She said: "Ross, if there's some chance you see this or hear this, we love you and we miss you so much, and we just need you back to be safe."

Anyone with information on Mr Taylor's whereabouts can call 101.