tonight the programme will reveal what kris aves made of his new home.aniella relph, bbc news, north london. and you can see the full programme tonight — that's diy sos, on bbc one at 8pm, and available shortly afterwards on the iplayer. for decades red squirrels have been in decline across the uk, as the non—native grey species has spread. now it appears the pine marten may be key to the recovery of the red population. scientists at the university of aberdeen have carried out an in—depth study of the relationship between the three species. our science correspondent victoria gill explains. it is an idyllic woodland site but a glimpse of ecological warfare. red squirrels have been losing a battle with the larger invasive grey squirrels for a century but a new character has joined squirrels for a century but a new character hasjoined in squirrels for a century but a new character has joined in the fray. scientists from the university of aberdeen used feeding boxes to gather forensic evidence of how the three species coexist in scottish forest. feeding boxe

one of those with catastrophic injuries was metropolitan police constable kris aves.ol inafun know how i'm going to be in a pool in a fun session with them. i won't be able to stand up and kick a football with them. i kind ofjust, feel, you know, it's been taken away from you and it's not fair. the kids ask a lot of questions about stuff, why did daddy get hit, was he not looking when he crossed the road, things like that, it's quite hard to answer. at the end of last year the diy sos team stepped in. this is diy sos! they took the family's north london home and transformed it. they asked volu nteers home and transformed it. they asked volunteers to help. the programme had never had such an enormous response. sometimes we look at the police and the people that go out in the emergency services and do what they do for us but when you get behind every person there is a family, they're behind every person there is a family, they‘ re not just behind every person there is a family, they're notjust uniforms, theirfamilies are family, they're notjust uniforms, their families

tonight the programme will reveal what kris aves made of his new home. that helpful because nothing had happened a year before and we'd tried some different things, and we ran some tests and they didn't give us anything indicating a positive outcome. so we thought, we will treat her as if she's pregnant and keep our fingers crossed but i wouldn't have bet more thana crossed but i wouldn't have bet more than a fiver on it. and then on the 18th when one of the keepers at the cub making noises from inside the den, we were all very pleasantly surprised with the accent on surprised! —— when one of the keepers heard the curb. the first thing rachel asked me was, why was a polar bear born at flamingo land? she will be here with the business news shortly. first, the headlines. what was used to poison the russian spy and his daughter? we‘ll find out as ministers move to address people‘s concerns. as police continued to search various properties reports that a woman has been escorted by officers into an ambulance and driven away. a lorry driver david wagstaff has

bridge attack. some of them suffering what has been described as catastrophic injuries. constable kris avesnk forward. session with them. i won't be able to stand up and kick a football with them. from you and it's not fair. the kids ask a lot of questions about stuff, "why did daddy get hit? was he not looking when he crossed the road? things like that, it's quite hard to answer. at the end of last year the diy sos team stepped in. this is diy sos! they took the family's north london home and transformed it. they asked volunteers to help. the programme had never had such an enormous response. to kris had a massive effect on the family. we had exclusive access to the build and the team's work. doorways were widened, allowing access for kris's wheelchair. in the kitchen, surfaces were lowered and space made to cook. can move between floors. in the garden, a complete redesign. all to ensure that there is space to play with his son and daughter. properly together again. and depended totally on the generosity of others. do you need a toilet, do you need a decorator? and notjust builders. cake.