BT Business & BT Wholesale leased line costs

100Mbps | 1Gbps | 10Gbps | Ethernet First Mile

We’ll get you a great deal taking care of everything including a comprehensive search of leased line costs across both BT Business and BT Wholesale. Plus, we're able to help with Cloud and Security.


How we search for the very latest BT leased line costs?

All we require is your postcode and bandwidth options. Plus, we're able to add Cloud Voice and Security as required. Note: We can apply the Gigabit voucher scheme for further discounts subject to qualification.

We operate as an Authorised BT Partner. Orders are placed on BT systems resulting in a direct BT contract, support and billing. With the expert technical account management of Network Union at no additional cost. Or you can choose to buy BT Wholesale.

We do not use API access, all of our checks are performed manually to ensure we have the most up to date knowledge based of current deals and offers.

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With our BT Partnerships, you have the choice of a direct BT contract via our Authorised BT Partner Sales relationship or buy via BT Wholesale. And Cisco Meraki.

What are average BT leased line costs?

  • The costs for leased lines begin at £200 per month through to over £1000 depending on bandwidth and proximity to the local Point of Presence.

How it works?

We’re best known for offering procurement comparison on leased line and Wide Area Network data services for BT Business and BT Wholesale.  

We write for and have won numerous awards from BT Business for our work.

We're a unique combination of a procurement agency together with the ability to technically design and account manage services. We do a whole lot more besides including Cloud Voice, SIP and Network Security. We write for as connectivity experts, our business won BT Partner of the Year for fixed services alongside Carphone Warehouse for their work in the mobile sector.

We provide technical account management and price comparison across 100Mbps, 1Gbps and 10Gbps Ethernet leased line access. In addition, we are able to architect SIP, Cloud Voice and security into each proposal.

We provide clear information so that you can go on to purchase a product that meets your needs.

Our work with the service provider market place has been recognised, TNU operates at the top level of Partnership with BT and we’ve won various awards for our success since 2009.

BTNet Leased Line Offers

Above, the latest BTNet Leased Line Offers.



What is the typical SLA for BT Ethernet leased line services?

  • 4 hour support response time and 5-hour target fix.
  • Flex bandwidth quickly up to the the 100Mbps or 1Gbps limit.
  • Delivery SLA: Beyond 7 days of CDD (Committed Delivery Date).
  • Some leased lines provide 100% availability, reduction of rental charges if an outage occurs
  • We recommend UK core network guarantees a latency of 20ms or less between core nodes.
  • Transatlantic leased line latency should be guaranteed at 95ms of less between transit hubs.
  • All managed hardware should covered for 4-hour change where required. (based on the typical Cisco fix time)

What are the resiliency and diversity options to improve SLA uptime?

Adding resilience to your leased line requires the addition of a diverse secondary circuit (RA02 Secure Plus). We will primarily design a solution which avoids any single point of failure (subject to survey). The success of any resilient and diverse solution surrounds the ability to connect into diverse building entry points, dual routers and dual tail circuits routed to separate exchanges.

Again, this is a real plus point regarding the discussion of network coverage since the larger network providers can route your site into diverse points within their network. With managed services, two managed BT routers are deployed configured as an HSRP pair. If one managed route fails, the failover would automatically re-route your Internet traffic.

As you would expect when connecting a second circuit, the overall leased line costs will increase.

Services are also available with load balancing - the traffic is shared across two physical access which, again, may be diversely routed. The second circuit could be a lower bandwidth than the primary circuit depending on the traffic profile. With leased line bandwidth connection speeds available from 10MBits Ethernet through to 10Gbps within hosting sites, there's a little risk of congestion. Available managed (with router) or unmanaged.

The majority of leased lines offer a 1:1 performance guarantee, uncontended to ensure applications and data perform with a consistent level of speed and uptime. These features provide a competitive edge to your business. As an example, 35% of UK broadband consumers use BT's Internet services with peering agreements which mean 75% of users connecting to the Internet are only a hop away.

Flexing of bandwidth is easy: you're able to flex within 72 hours, so you only pay for what you need. With circuits typically based on 100MB Ethernet, you'll get plenty of bandwidth to avoid congestion.

The majority of circuits are supported 24/7/365 with a 4 hour response time and 5 hour fix. The only exception if copper-based Ethernet First Mile - EFM - where the support fix time is typically around 7 hours.

In the corporate environment, it is important to protect users and your web presence. We ask about security to prevent illegal downloading of content - including  optional services which safeguard your web presence against attacks.

BT Multihoming and Leased Lines

A further more complex design is available called BGP multihomed architecture. This is where two ISPs are used to provide diversity and resiliency. Customers purchase their own AS (Autonomous System) number and essentially become part of the Internet. We're going to be writing more about this subject in future articles.

BTNet Failover design

Above. Leased Line failover.


Leased line IP Addressing and DNS (Domain Registration System).

  • With BT leased line connectivity, providers automatically provides a set of IP addresses and manage your DNS. 
  • The DNS element covers where the ISP points your traffic for web, email and other hosts. 
  • For example, if you host your own web or email server, DNS resolves the hostname to the IP address - e.g. Wikipedia to an IP address.

Firewall Security, DDoS, IP Addressing and DNS.

All public Internet services require Firewall security to protect your userbase from external threats. In addition to general security, how your business intends to use the leased line from the perspective of applications must also be considered. If, for example, voice (VoIP) is to be used, the users traffic is typically segregated.

In the corporate environment, it is important to protect users and your web presence. Leased line services offer security to prevent illegal downloading of content. BT Business also offer optional services which safeguard your web presence against attacks.

The Internet Watch Foundations managed blacklist to prevent users from downloading illegal content. Optionally, BT Cleanfeed may be turned off. Providers also proactively monitor and protect the core network against denial of service attacks. There is also security accredited to BSI 7799 / ISO 17799 with optional distributed denial of service protection. Essentially, the service mitigates against traffic DDoS attacks, DoS floods, Protocol misuse, works and behaviour anomaly based attacks. If you're unsure about these terms, we'll explain over coffee.

DDOS (Distributed Denial of Service) is an additional option available to clients. 

Example of the BT service PDF attached - BT Assure DDoS

IP Addressing is available - both IPv4 and IPv6 - but all applications must be justified to RIPE. In other words, let us know as soon as possible the amount of hosts on your network requiring a static IP address.

With regards to DNS, the typical email system is based on the Simple Mail Transfer Protocol (SMTP). SMTP allows the transmission of messages from one server to another.

Multiple mail servers may be used (if you have your own mail server) an SMTP outgoing mail service and a 2nd preference incoming mail service. This is based on standard SMTP protocols.

The services supported by the Mail platform are:

  • Outgoing Mail (SMTP Relay) – customer can configure email server to send via the BTnet mail server
  • Incoming Mail (2nd preference Mx) - Provides a back-up mail service to the customer’s primary mail server. The customer would configure their DNS settings so that in the event their primary mail server is down their mail gets sent to the Incoming Mail servers. Servers hold the mail for 3 days and will attempt to re-deliver this mail to the end customer’s primary mail servers when they become available. This is a backup mail service.
  • Access to the SMTP outgoing mail relay service is controlled by adding the Customer’s domain name to an access list. The customer must have a matching forward (A record) and Reverse DNS12 entry that should be provided at time of order.
  • The Incoming and outgoing mail relays both use the Spamhaus blacklist and will not relay or accept mail for IPs on this list. Customers managing their own mail servers must ensure they are NOT configured to allow open mail relay. Failure to enforce this could lead to the ISP blocking all customers mail as open relays are used for SPAM.

Discuss your requirements with a leased line Ethernet expert?

  • Our Partner agreements mean we do not work in isolation.
  • We’ll involve a member of our support team.
  • As with most aspects of telecoms, Internet is often treated as a commodity purchase. At Network Union, we are recognised experts allowing our clients to buy solutions directly from our indirect partners or via Wholesale.

How we technically account manage your account?

We’ve taken the time to become Leased Line pricing and product experts.

We work with both Global & UK Enterprise clients helping them to implement the right BT Business Ethernet connectivity and maintain good practice throughout the contract. All sales are covered by our WAN architecture diagnostic approach (WADA): Enterprise level consultancy built in at no extra cost.

Our workflows will allow you to design a solution which will meet requirements. Whether you're looking for a single leased line circuit or a dual approach with diversity and resilience, Network Union will perform the work to ensure you conclude with a fit for purpose design together with the best possible leased line costs.


What else is there to know?

  • Since your traffic is best served when sent over a single provider (rather than effectively hopping from provider to provider) certain networks have a significant advantage vs. most of the competition.
  • And perhaps this is the key critical area to be aware of since smaller providers may be offering Internet access out of a single data centre using wholesale providers such as Open Reach and Virgin to connect your business.

Some final thoughts on obtaining leased line costs?

Providers range from the very small through to medium sized providers and then onto larger tier 1's such as BT. With the word 'premium' you might expect the line pricing to be significantly higher than the lower cost smaller providers. However, BT is typically never the lowest cost, but the pricing is not far out considering the scale and breadth of their leased line network.

A step away from broadband technology

One of the reasons dedicated leased lines have become competitive surrounds a couple of critical areas. The first is the limitations of broadband Internet speeds, in particular, upload. With some significant advances in fibre to the cabinet based services, the upload speed is still an issue for some organisations.

Also, broadband is a copper based service which does not pose the same attributes as an end to end fibre based leased circuit. With clients suffering issues with poor quality copper, variable speeds and a higher incidence of downtime, a leased line has become more compelling than ever.

The second surrounds applications which are deployed over corporate Internet circuits. These apps range from delay-sensitive voice and video conferencing, cloud computing through to extranet and remote users requiring Citrix or SAP access to the network on a global basis.

How much does a leased line cost?

If your budget is limited, the overall Ethernet 100MB leased line fibre pricing vs. FTTC broadband may well be an issue. We see pricing from £150 to around £1000 per month depending on the distance from the providers network. When you consider Business Broadband ranges from £20 to £50 per month, leased lines are a significant cost uplift depending on the size of your business.

Is the 100Mbps Ethernet BT leased line still the best option?

The pricing of 1Gbits BTNet Ethernet is becoming significantly lower due to the increasing demand for this level of bandwidth. We have witnessed the demise of the 10Mbits circuits as 100Mbits speeds are now the lowest entry level within the marketplace. Readers should note that tiered circuits are the standard - for example; you could opt for 100Mbits tiered at 10Mbits. When using our quotation service, let our team know your preferred option.


Outside of BT Leased Line, what other capabilities are offered?












BTNet Leased Line Costs quote tool

Above. The internal tool we use to request pricing.

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