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Zen Internet’s Andrew Sayle explains how UK broadband ISPs set pricing

Monday, Sep 21st, 2026 (12:01 am) - Score 2,040
House on top of one uk pound of money by 123rf ID115586217

The Connectivity Portfolio Manager of UK broadband ISP Zen Internet, Andrew Sayle, has published a new editorial that gives consumers a unique insight into how modern Internet Service Providers set the price you pay for your package. It also touches on how much of an impact that decision can have on the service or support quality you receive.

Regular readers of ISPreview will know of how we often make the point that price ISPs pay at wholesale for the line you’re on (e.g. from Openreach, CityFibre or others) is not the same as the price consumers pay at retail. This is because ISPs have to add all sorts of extra costs on top (e.g. 20% VAT, profit margins, network services / features / capacity etc.), which is an oversimplification.

Andrew delves into the decision making for all this and highlights how the price you pay also needs to reflect other areas, such as marketing; the bundled router and postage (if applicable); traffic peering / transit deals; the fee paid to the comparison site on every sale (if applicable); support teams (inc. staff pensions etc.); payment systems; balancing for future cost rises; the cost of adding Ofcom’s latest piece of regulatory wonder; balancing costs for customers who don’t pay their bills and a myriad of other things.

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The piece also delves into the contentious area of heavily discounted first year (or first term) price promotion. Andrew makes the point that such discounts “often [won’t] cover the ISP’s costs at all” and that it’s more based on a “bet” you’ll stay past the contracted end date (many people do – especially with only c.15% switching every year).

“That bet is the entire reason the industry ended up with the loyalty penalty, retention discounts and mid-contract price rises, and no, I’m not defending that structure. You’re right to find it annoying. It’s just more useful to see it as the consequence of the discount you were offered at the start than as some grand act of villainy,” explained Andrew.

The reality is that a lot of consumers often voice a desire for things like good support, service quality and fixed price contracts, but then many of those same people still go on to buy on price anyway, fuelling a collective race to the bottom. Andrew’s piece does a really good job of expression all of the conflicts and challenges in how an ISP decides on what to charge customers.

Andrew Sayle said:

“Your price wasn’t worked out from what it costs us. It was worked out from what you’d click on.

The costs came after. We take the number the market will bear, then spend weeks arguing about what we can afford to give up underneath it. The network, the support desk, the intro offer that loses money in the hope you’ll stay. All squeezed to fit a number that was decided before anyone opened the spreadsheet. Which, for the record, has too many tabs.

Most people picture it the other way round: wholesale line, plus a bit, done. Anyone charging more is having a laugh. It’s a reasonable theory. It’s just not how any of us actually do it.

So I’ve written it all down. What’s really in the bill, why the cheapest deal and the fixed deal are rarely the same deal, and why great service is both the thing that keeps you, and the thing whose price tag might just push you away.”

We highly recommend reading Andrew’s blog on this, particularly if you’re not already familiar with how things like this work behind the scenes, as it’s a fairly short, easy read that fits a lot of subtle detail into just a few paragraphs.

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Mark-Jackson
By Mark Jackson
Mark is a professional technology writer, IT consultant and computer engineer from Dorset (England), he also founded ISPreview in 1999 and enjoys analysing the latest telecoms and broadband developments. Find me on X (Twitter), Mastodon, Facebook, BlueSky, Threads.net and .
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Comments
5 Responses

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  1. Avatar photo MilesT says:

    Presumably the 20% vat on the wholesale rental can be offset (as input VAT) against the 20% VAT charged to customer (output VAT).

    So it’s not a straight 20% markup of the wholesale price to the customer, ultimately the VAT is charged on the monetary value added (retail price – wholesale price+other costs) added by the ISP (this is a simplified view of the topic; also not every input cost is subject to VAT and therefore can’t be offset on VAT recieved from retail customer)

  2. Avatar photo Ed says:

    Don’t forget any subsidy to or from other services the business may also try to sell you. Cheap broadband to keep you buying expensive TV from SKY, for example (and, of course, vice-versa from EE).

  3. Avatar photo cam says:

    “The reality is that a lot of consumers often voice a desire for things like good support, service quality and fixed price contracts, but then many of those same people still go on to buy on price anyway, fuelling a collective race to the bottom. ”

    Well, yeah. People go for the cheap option then complain that it’s not as good as the expensive ones not realising that it’s their fault. Ultimately, you get what you pay for

    1. Avatar photo 125us says:

      And the market responds to that consumer behaviour with products that match. It’s a well known British trait and manufacturers of white goods sell inferior versions of their products in the UK because Brits prefer to ‘buy cheap, buy twice’ rather than purchase things that will last a long time and work well.

    2. Avatar photo mrpops2ko says:

      sorry but that commentary is just completely counter factual.

      you are right in identifying that consumers are buying on price, but they are only doing that because there is no meaningful difference in service quality.

      SLAs do nothing if a real network outage happens. the technology itself is largely the limiter on speeds and latency, nothing else.

      I don’t think theres a single retail ISP which optimises for latency. none of them which are paying for expensive routes over cheap ones and doing A / B comparisons on end to end connectivity.

      theres a ton which could do that, none of what i’ve just said isn’t possible. just none of them.

      so in effect what you end up is a scenario where you are buying magic beans, and just how many magic beans do you want? you can get the super deluxe magic bean package, which performs almost identically to the extreme turbo max magic bean package

      when ISPs start offering genuine and meaningful distinctions in performance, then consumers will pay more for it. To date none of the ISPs do that. none of them are monitoring their own customers networks for end to end latency, so how could they legitimately claim otherwise?

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