Home - ADSI Ltd

We Are

Cost effective Business to Business Solutions

Our Business Services include

Why ADSI?

Founded in 2002, ADSI provide a range of cost effective business solutions including Mobile Communications, VoIP Telephony, IT Support, Tech Services, Electricity & Gas Procurement and other managed services.

We understand that every business has different and unique requirements so we tailor our solutions to the individual needs of each of our clients.

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Unique & Proud

We work in partnership with your business. As an ADSI customer you benefit from our expertise and extensive industry knowledge delivered through a personalised service.

Award Winning

We have been an O2 Direct Partner with Customer & Digital Excellence accreditation since 2004 and remain to-date one of the largest, customer focused, Partners for the Network.

Our Customers

We have assisted over 9000 businesses with dedicated Account Managers, in-depth monthly bill analysis and reviews. We aim to answer your call within 3 rings.

News & Offers

Free Roaming

Great news for travelling this year… O2 have free roaming in Europe. Standard O2 Tariffs come with free roaming in the O2 Europe Zone, this means when travelling to Europe, unless you have a special tariff, roaming in O2’s Europe Zone will be included in your UK allowance. So you’ll be able to make and…

ADSI Tech Services

Whatever the size of your business, our Tech services and IT support can be tailored to suit your needs. Whether you’re looking for email security, control annoying spam, cyber secure accreditation or cloud backup – we have a solution to cover it! We also have a range of flexible IT support plans to protect your…

Customer Portal

Our Customer Portal, MyADSI, allows customers to manage and administer some aspects of their mobile account themselves. MyADSI puts YOU in control of your mobile account Access to the self-service customer portal gives you the convenience of being able manage your mobile account online, quickly and easily. It gives you access to billing information and…

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Here's what our customers say...

Always efficient…

The fact that we have kept our business with ADSI in such a competitive market for such a long time speaks for itself really. Service is great, always efficient. Clare manages our requests and queries promptly and efficiently with the bonus that she is always such a delight to talk to

Aveat Heating

Confident in safe hands…

Simon organised our Energy suppliers with minimal input from us which helped massively, and managed to save us money at the same time! I feel confident that our account is in safe hands which gives us one less thing to think about in the running of our business; I know Simon will be in touch as and when I need to…

Drainsmart

Professional and informative

Simon came across as polite, professional and informative. I felt confident that he could get us the best electricity deal for our depots across the country. In the end it transpired that a restructure with our current provider was best and we were happy to do this and save money at the same time. I would not hesitate in recommending…

CED Stone Group

Happy with the service

very happy with the overall handling. We did switch suppliers; we actually had two different suppliers over the three units we have and Simon managed to get them all under one supplier. He handled everything, there were no problems whatsoever. Simon was very informative, he showed us exactly what we were paying and then what we would be paying if…

Mid Kent Pet Foods

Second to none

ADSI have managed my mobile phone contract for more than 10 years. Their customer service is second to none, always answering the phone promptly in response to my questions and queries. The Bill Manager facility is fantastic, really useful in easily allowing me to manage and control the spend on the whole of my contract.

Martin Havenhand, Switched on Solutions

Worked really hard…

Our Account Manager worked really hard at sorting out an almighty mess created by our previous network provider, it’s great to have one point of contact and be able to have somebody who is prepared to take ownership of any problems that occur, and solve them immediately.

Capital Drainage

Saved considerably

Our account manager, Brad, at ADSI is faultless - I would highly recommend! He helps with all queries, is knowledgeable & friendly, we feel confident that he gets us the best deal and gives us the best advice. We have saved a considerable amount of money over the years and the control we have over our mobile phones now is second…

Fire Protection

Great results…

I would like to thank Dave Cribbs from ADSI for advising and helping with the new VoIP system that we now use. This enables myself and my virtual assistant to answer every call we receive. The increase in answered calls has led to more successful bookings

Body Beliefs Osteopathy

Helpful and professional

We switched our telephone service from BT to ADSI and have been delighted with the service so far. Everyone we have had contact with has been helpful and professional and I wouldn't hesitate in recommending them

Lugano Residence

No hesitation…

Since ADSI have taken over our mobile phone management we have not had a single issue. They have even dealt with an ongoing problem that we had been trying to resolve for over a year! Dave is always really helpful and responds to any queries we have quickly and efficiently. I would have no hesitation in recommending them.

Sarah Noble, HRDept.co.uk

Made moving office easy…

We needed new phones and broadband quickly for our office move, Dave Cribbs arranged a site survey ahead of the move, ordered everything to our specific requirements. The process was handled smoothly and efficiently. I would strongly recommend.

Rose Associates Financial Planning

Definitely saved money

Simon did sort out the gas and provided all the paperwork including setting up of new DD, all I had to do was sign the papers and all went through smoothly. We have definitely saved some money so far on the Gas and hopefully soon on the Electricity. The whole process was made extremely easy for me and I would…

Clarks Construction

A phone call away…

The staff at ADSI seem highly motived to deliver excellent service to their customers. I have recommended them on a number of occasions because ADSI support is easily accessible and very clear. I feel that if I have any issue with our phones, one call will sort it out.

Phoenix Compactor

Very grateful…

ADSI have been integral to our business growth providing a reliable and cost effective way to run an essential service to our company and staff who rely on constant communication. As a company and personally, they know exactly who we are and our habits so can advise and manage our services honestly and precisely. You have to enjoy working with…

Nick Frost, Models 1

Really happy…

We are really happy with overall service from ADSI; it’s great to have someone assigned to our account that can help us with any issues. Our overall phone costs have greatly decreased and we are happy with ADSI

McCue Corporation