News
New OS tideline data could strengthen coastal erosion and flood monitoring
NEW data released by Ordnance Survey (OS) could significantly improve how coastal erosion and flood risk are monitored across Great Britain as sea levels rise and extreme rainfall becomes more frequent.
The continuous tidelines dataset provides a clearer and more accurate picture of where high and low tides fall around the coast and along tidal rivers. The data is expected to support environmental monitoring, flood modelling, and long-term planning as the impacts of climate change accelerate.

Earlier this year, the Environment Agency updated its National Flood Risk Assessment (NaFRA), which for the first time factored in projected climate change impacts. The assessment found that around 6.3 million homes and businesses in England — roughly one in five — are currently at risk of flooding. That figure could rise to one in four properties by 2050.
The Agency has also updated its national coastal erosion risk map, which estimates that around 3,500 properties could be affected by coastal erosion by 2055.
The new OS dataset builds on existing information held in the OS National Geographic Database (OS NGD). Previously separate tidal boundary features have now been automatically merged into continuous high- and low-tide lines, creating two new feature types within the OS NGD Water theme. These can also be used as overlay layers through the OS Tiles API, allowing for clearer visual mapping and large-scale analysis.
The data is expected to support a wide range of environmental and regulatory work, including coastal erosion and flooding modelling, updating boundary features to reflect coastal change, climate change impact assessments, and identifying areas of foreshore that act as natural flood defences.
William Russell, Senior Coastal Process Scientist at the Wales Coastal Monitoring Centre, said the dataset would remove uncertainty from coastal monitoring.
“One of our core values is ‘data, not opinions’. When information is missing, we seek out or collect the data needed to support sound decision-making,” he said.
“The OS Continuous Tidal Boundaries dataset removes uncertainty from our strategic monitoring programme and gives us clearer insight into intertidal extents, delivering cost savings and efficiencies for our survey contractors.”
Ordnance Survey says the data is particularly valuable for environmental policy and regulation, including decisions around water discharge and flood management. Accurately defining the intertidal zone helps identify natural coastal defences, which play a vital role in protecting communities and ecosystems.
Intertidal information has also been enhanced within the Land theme of the OS NGD, with improved coverage of previously obscured areas to create a more complete national coastal dataset.
Lily Brown, Product Manager at Ordnance Survey, said the data would support evidence-based decision-making.
“The OS National Geographic Database contains trusted, accurate features that support everything from climate resilience and infrastructure planning to coastal management,” she said.
“By incorporating authoritative tideline data, we are enabling decisions that will help protect and monitor Britain’s evolving coastlines.”
Following the dataset’s release, Ordnance Survey analysed how ceremonial counties change in size between high and low tide. Merseyside showed the greatest variation, with a nearly 17% difference, followed by Orkney at around 7%.
The analysis also highlighted that counties considered landlocked, such as Nottinghamshire and South Yorkshire, still experience significant tidal influence due to rivers like the Trent and the Don being tidal far inland.
When combined with Unique Property Reference Numbers (UPRNs), the tideline data shows that Greater London has the highest number of homes and businesses within 15 metres of the high-tide line, at around 5,500. Cornwall ranks second with just over 3,000 properties, followed by Devon with around 2,400.
The new data has been released under the Public Sector Geospatial Agreement (PSGA), which provides emergency services and public sector organisations with access to Ordnance Survey data and services.
Ministry of Defence
Could Milford Haven be a target? Are we exposed as UK relies on US for missile defence?
Cold War fears resurface as Iran’s reach grows and Britain admits it has no independent shield
PEMBROKESHIRE has long been considered a strategic target — and during the Cold War, the county’s energy infrastructure and Atlantic access placed it firmly on the radar of military planners.
Today, those same strengths are raising uncomfortable questions once again.
As tensions rise following Iran’s attempted strike on a UK–US base at Diego Garcia on Saturday (March 21), the debate has shifted sharply: not whether Britain is under immediate threat — but whether it would be protected if that ever changed.

Strategic target
Milford Haven is home to some of the UK’s most critical energy assets, including major LNG terminals and oil infrastructure that supply a significant share of the nation’s gas.
In strategic terms, such facilities would rank among the most valuable economic targets in any high-level conflict.
For many in Pembrokeshire, that reality is nothing new. During the Cold War, the area was widely regarded as a potential target due to its importance to Britain’s energy security.
Lessons from Diego Garcia
The attempted strike on Diego Garcia has become a defining moment in the current crisis.
The joint UK–US base is a heavily defended military installation, supported by advanced radar systems and US naval assets. Reports indicate that one of the incoming missiles was intercepted before it could reach its target, while another failed.
But that success raises a more troubling question.
If a missile can be intercepted over a fortified base in the Indian Ocean, what happens when the target is a civilian energy hub in west Wales?

No shield over Britain
The UK has no dedicated system to intercept long-range ballistic missiles over its own territory.
While RAF Fylingdales provides early warning and tracking, it cannot stop an incoming threat.
Britain’s air defence network is designed to deal with aircraft, drones and cruise missiles — not high-speed ballistic weapons travelling through space.
In practical terms, if a missile were ever heading toward a location such as Milford Haven, there is no British-operated system that could reliably stop it at the last moment.
Reliance on the United States
Instead, any interception attempt would fall to the United States and wider NATO systems.
These include:
- Aegis Ashore missile defence bases in Eastern Europe
- US Navy warships equipped with SM-3 interceptors
- Integrated NATO tracking and command networks
These systems are capable of striking a missile in space during its midcourse phase — but only if the missile passes within range.
If it does not, there may be no interception at all.
Even when an attempt is made, success is not guaranteed. Analysts estimate that such systems have a probability of success of between 50 and 80 per cent under test conditions, meaning multiple interceptors are often fired at a single target to improve the odds.
Europe now “within range”
The debate has intensified following warnings from Israel that Iran’s latest missiles could reach far beyond the Middle East.
Israeli officials have claimed that the system used in the Diego Garcia attempt was a two-stage ballistic missile with a range of around 4,000 km — potentially placing parts of Europe within reach.
Cities such as London, Paris and Berlin have been cited as falling within the outer limits of that range, although experts stress that range on paper does not necessarily translate into reliable, repeatable strike capability.
Experts divided
Defence analysts remain split.
Some say the attempted long-range strike marks a clear step forward in Iran’s capabilities, moving the threat from theoretical to credible.
Others caution that Iran’s operational missile arsenal has historically been limited to around 2,000 km, suggesting that any longer-range capability may still be experimental rather than deployable.
UK Government response
Ministers have sought to calm fears, insisting there is no current evidence that Iran has either the intent or the capability to strike the UK mainland.
At the same time, the government has condemned Iran’s actions as “reckless” and emphasised that Britain will work with allies to protect its interests.
That response reflects a broader reality.
Deterrence, not defence
Britain’s primary protection is not interception — it is deterrence.
Any successful strike on UK soil would almost certainly trigger a major NATO response, making such an attack extraordinarily risky for any adversary.
But deterrence does not eliminate vulnerability.
The bottom line
Pembrokeshire’s strategic importance has not changed — but the conversation around long-range threats has.
The UK can detect a missile. It can track it. It can coordinate with allies and attempt an interception at distance.
But when it comes to stopping it over Britain itself, there is no independent shield — only reliance on US and NATO systems being in the right place at the right time.
For communities built around critical infrastructure like Milford Haven, that raises a stark and uncomfortable question:
If the unthinkable ever became reality, who — if anyone — would be able to stop it?
Community
Milford Haven salon named national awards finalist
A local beauty therapist earns recognition in prestigious UK competition
A MILFORD HAVEN beauty therapist has been shortlisted for a major national award celebrating excellence in the hair and beauty industry.
Charlotte Mitchell-Johns, of The Attic Hair & Beauty, has been named a finalist in the Hair Extensions Specialist category at the UK Hair and Beauty Awards 2026.
Ms Mitchell-Johns, who is a Level four beauty therapist, also works as a hair extensions specialist and beauty educator with HB Training.
Speaking about the recognition, she said she was “truly honoured” to be named among the finalists.
She added that she believes the industry thrives on collaboration rather than competition, and that supporting others is key to long-term success.
Ms Mitchell-Johns has been recognised for her technical skill, commitment to clients, and efforts to maintain high standards within the beauty sector.
The UK Hair and Beauty Awards highlight leading professionals from across the country, celebrating talent, creativity and dedication within the industry.
Crime
Child rapist found with abuse images after moving to west Wales
Registered sex offender Wayne Evans, who moved to Carmarthenshire for a fresh start, was caught after the National Crime Agency flagged activity linked to a Kik account
A CONVICTED child rapist who moved to rural west Wales in an apparent attempt to start over was found with indecent images of children on his phone after his online activity was flagged by the National Crime Agency.
Wayne Evans, 59, of Pentrecourt Road, Llandysul, appeared before Swansea Crown Court after officers discovered the images during an investigation triggered by the NCA.
The court heard that in January last year, the NCA alerted Dyfed-Powys Police to a Kik messaging account involved in downloading indecent images of children. The email address linked to the account was already known to police and belonged to Evans, a registered sex offender.
Officers went to his home on January 28 and arrested him. Evans told police he had not downloaded the images himself and claimed they had appeared in a Kik group he was part of, adding that the group had since been shut down.
Police seized six devices from the property and Evans handed over the pin numbers for his phones and tablets. He later answered “no comment” to questions in interview and was released under investigation while the devices were examined.
A forensic analysis of his Samsung Galaxy phone uncovered 13 Category A images, eight Category B images and two Category C images. The material involved children aged between four and 12.
Category A images are considered the most serious and involve the gravest forms of sexual abuse.
The court was told Evans has six previous convictions covering 23 offences. In 1990, he was convicted of gross indecency with a child and indecent assault of a child. In 2002, he was jailed for 15 years for raping a child under 16, attempted rape, gross indecency and five further counts of indecent assault. He was placed on the sex offenders register for life and released from prison in 2011.
Evans had admitted three counts of making indecent images of children, covering Categories A, B and C.
Emily Bennett, representing Evans, said her client knew the court would view the offences in the “dimmest of lights”. She said he had moved to a rural part of Wales where he kept himself to himself and had taken steps to reduce his contact with females.
She also told the court Evans accepted that he still had an inappropriate sexual attraction to children, and said he was in a long-term stable relationship with a partner who knew about his past offending.
Sentencing Evans, Recorder Mark Powell KC said he accepted that the defendant had taken some steps to change his life, but said it was clear he continued to have a sexual interest in children.
The judge said his priority was to pass a sentence which reduced the risk Evans posed. He said an immediate prison term available under the guidelines would be relatively short, could be destabilising, and might even increase the danger to the public.
With credit for his guilty pleas, Evans was sentenced to 16 months in prison, suspended for 18 months. He was also ordered to complete a rehabilitation activity requirement, a Building Choices programme, and 100 hours of unpaid work.
A Sexual Harm Prevention Order was imposed for 10 years, and Evans will remain on the sex offenders register for life.
Photo caption:
Wayne Evans was sentenced at Swansea Crown Court after indecent images of children were found on his phone
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