When a new company is registered at Companies House, the public record tells you quite a lot: the company name, its registered address, the directors, the SIC codes, and the date of formation. What it doesn't tell you is whether that company is actually trading yet.
For anyone doing business development - whether you're an accountant, an insurance broker, a web designer, or a B2B service provider - that distinction matters. A company that exists only on paper isn't worth chasing. A company that's just launched a website, on the other hand, is a company that's spending money, building a brand, and making decisions about who to work with. That's the moment they're most open to new suppliers.
The gap between forming a company and going live
There's almost always a delay between a new company being formed and it actually launching a website. Registration at Companies House is a legal step that can happen in minutes. Building a website, setting up email, choosing a domain - that takes longer. Sometimes days, sometimes weeks, occasionally months.
During that gap, the company is invisible to most prospecting tools. It exists on the Companies House register, but if you search for it online you'll find nothing - no website, no LinkedIn page, no Google Business Profile. If you're relying on web presence to qualify leads, these new businesses simply don't show up yet.
The problem is that once they do go live, the window of opportunity is short. The first few weeks after launching a website are when a business owner is most actively setting up their operations. They're choosing an accountant, sorting their insurance, evaluating software, comparing suppliers. Wait a month and someone else has already filled that slot.
Why the website launch is a better signal than registration
Not every company that forms goes on to trade. Some are dormant holding companies. Some are shelf companies created by formation agents. Some are SPVs for a single property transaction that will never need a public-facing website. According to Companies House data, there are over 5.4 million companies on the UK register, but the effective register (excluding those in dissolution or liquidation) is closer to 4.9 million - and many of those are dormant.
A website launch cuts through that noise. When a new company puts up a live website, it's a strong signal that real commercial activity is starting. Someone has paid for a domain, built pages, and is presenting themselves to the world. For BD teams, that's a far more qualified lead than a raw registration record.
Think of it this way: the formation tells you a company exists. The website tells you it's open for business.
How to check manually (and why it doesn't scale)
The simplest approach is to take a new company's name, guess what their domain might be (companyname.co.uk or companyname.com), and type it into your browser. If something loads, they've launched. If you get a parked page or a "this domain is for sale" notice, they haven't.
This works if you're tracking one or two companies. It falls apart completely at any kind of scale. If you're monitoring dozens or hundreds of new businesses that match your target sectors, manually checking domains every day is not a realistic use of anyone's time. You'd also miss the moment it happens - you might check on a Tuesday and the site could have launched the previous Thursday.
There are a few other complications. Some domain registrars show parked pages that look like real websites at first glance. Some new companies use subdomains or unusual domain extensions rather than .co.uk. And some businesses register a domain immediately but don't put any real content on it for weeks - a "coming soon" page isn't the same as a live website.
Automating the process
The better approach is to automate the check entirely. The logic is straightforward: take a list of recently formed companies, derive the most likely domain names from their company name, check whether those domains resolve to a real website (filtering out parked pages, placeholder content, and domain-for-sale notices), and repeat daily for a set period.
Most new companies that are going to launch a website will do so within 30 days of being formed. After that, the probability drops sharply - they're either dormant, not planning a web presence, or operating under a different trading name that's harder to match automatically.
The key technical challenges are parked-domain detection (distinguishing a real website from a GoDaddy or Namecheap parking page) and knowing when to stop checking. A good monitoring system handles both: it recognises common parked-page patterns and auto-expires watches after a sensible period so you're not wasting resources checking companies that are clearly not going to launch.
What to do when a website goes live
Once you know a new company has launched a website, you have something most of your competitors don't: timing. You know the business is active right now, and you can reach out while they're still in setup mode.
A few tips for making the most of that moment:
Visit the website first. Spend 60 seconds understanding what the company actually does. Nothing kills credibility faster than a generic outreach message that could apply to any business. If their website says they're a construction consultancy, reference that in your approach.
Check their Companies House record. You already know when they were formed and who the directors are. If a director has other companies, that's a conversation starter - especially if you already work with one of their other businesses.
Use the right channel. A brand-new company probably doesn't have a receptionist screening calls. The director's name is on the Companies House record. Find them on LinkedIn, or use the contact details on their new website. Keep it short, relevant, and specific to their industry.
Don't wait. The value of this signal decays quickly. A company that launched its website three days ago is far more receptive than one that launched three months ago. If you're going to act on the information, act within the first week.
Who benefits most from website monitoring
Accountants and bookkeepers: A new website often means a company is about to start trading, which means they'll need bookkeeping, VAT registration, and accounts filed. If you can reach them before their first invoice goes out, you're in a strong position.
Insurance brokers: Commercial insurance is often one of the last things a new business sorts out - and one of the most urgent. A company that's just launched a website and is about to start taking on clients needs public liability, professional indemnity, or employers' liability cover. Reaching them at this exact moment is ideal.
Web designers and digital agencies: This might sound counterintuitive - they already have a website. But many newly launched sites are basic DIY builds. If you can see that a company in a high-value sector has just put up a bare-bones WordPress site, that's a qualified lead for a redesign conversation six months down the line.
B2B SaaS and service providers: Any company selling to small businesses benefits from knowing exactly when those businesses become active. Payment processors, CRM vendors, HR platforms, phone systems - the first few weeks of trading are when all these purchasing decisions get made.
Combining website monitoring with other signals
Website monitoring is most powerful when combined with other filtering. Knowing that "a company launched a website" is useful. Knowing that "a construction company in Manchester with two directors who also run three other active businesses just launched a website" is far more useful.
If you're already filtering new companies by SIC code (industry) and watching for director groups, adding website monitoring as a layer on top creates a pipeline of highly qualified, time-sensitive leads. The SIC code tells you they're in your target sector. The director data tells you they're experienced operators, not first-timers. The website launch tells you they're active right now.
That combination of signals is extremely difficult for your competitors to replicate manually. It's the kind of edge that compounds over time - every week, you're reaching companies at the right moment while everyone else is working from stale data.
Slopless includes a Website Watcher that monitors newly formed companies and notifies you the moment they launch a website. It checks daily for 30 days, filters out parked domains, and sends you an email when a real site goes live. You can add companies from the Live Stream or automatically from your Incorporation Digest. Sign up or get in touch to get started.