POLICE have released new CCTV of missing mum Constance Marten and her partner.
The cops today put out a fresh appeal, pleading with the public to report any sightings of the pair - who have been on the run since January 5.
They revealed Constance and Mark Gordon could be now be "absolutely anywhere in the UK".
New CCTV footage shows the couple walking along the side of a road past a petrol station.
Another clip from a ring doorbell shows the pair once again trudging along a footpath with carrier bags in tow.
It has now been six weeks since the 35 and 48-year-old ditched their burning car on a Manchester motorway and a nationwide hunt to find them - and their newborn baby - began.
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In the days after they vanished, it was revealed Constance had links to the Royal Family, and Gordon was a convicted rapist.
The police also revealed they believed the new mum had given birth in her car days before the pair fled.
In recent weeks Constance's mum begged for her to come home in a heartbreaking letter.
The last confirmed sighting of the pair was on January 8 - just three days after they fled.
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The couple were spotted at 6.15am, as they walked along Cantercrow Hill, Newhaven, and into the fields beyond.
Police have today announced they are extending their search as Costance and Gordon could have moved a "considerable distance" since then.
Met Police Detective Superintendent Lewis Basford today said: "They could be absolutely anywhere in the UK, so we need everyone to remain vigilant.
"When they were last sighted on 8 January they were in the possession of a blue two-man tent.
"So please keep your eyes peeled, especially while you are out and about in waste ground or beauty spots, or while you’re walking the dog."
The top cop said officers had watched more than 660 in an attempt to track the couple down, and fielded more than 300 calls from the public.
He reiterated: "My officers and I remain absolutely committed to finding Constance, Mark and their newborn baby.
"It could take just that one call into us with the right information, at the right time, to help us find the family and make sure they are okay."
Mr Basford added that the £10,000 reward was still on the table.
We check your baby is feeding properly and putting on weight, and they have screening tests to make sure their heart, hearing, hips and eyesight all look OK.
Shereen Nimmo
He continued: "Please be mindful that they might not always be out and about together.
"It could be that you just see Constance or Mark out by themselves getting supplies while the other is wherever they are staying with the baby.
“I would like to stress that we are not doing this and putting so many resources and efforts into finding the family just to be awkward or to interfere.
"We have a genuine concern for the health and wellbeing of the baby, and Constance and Mark, and it our duty to ensure that they are okay.”
Shereen Nimmo, director of midwifery for Barts Health NHS Trust, pleaded with the Constance to come forward.
She said: "I know that you really love your baby, and I know what an exciting and worrying time being a mum can be.
"And I want to make sure that you and your baby are OK and get the care you need.
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"After you have a baby, midwives are there to check you are recovering physically and emotionally and adjusting to caring for your newborn.
"We check your baby is feeding properly and putting on weight, and they have screening tests to make sure their heart, hearing, hips and eyesight all look OK."