0800 917 1441



Mon - Fri: 9:00 - 17:00


External Sounders – Your Choice!

We have 3 colour choices/styles of our Orisec Wired and Wireless (Orisec Only) external sounders to choose from!

Please visit our page on External Sounders by clicking here.

You will be able to view all 3 choices and spin them so you can see them from each orientation.

Roy Williams Tribute 2020

Roy Williams Tribute


It is with a deep heart that we have to announce the passing of one of the company partners, Roy Williams who sadly lost his battle to COVID-19 on 17th April 2020.

Roy started off Crosby Intruder Alarms back in 1984, the business started off as a bit of a hobby for him, carrying out work at evenings and weekends whilst still in full time employment. He worked tirelessly along with his wife Ann to build the business up and get it more established over the years. In 2009 his son Gareth came into the business and assisted Roy & Ann in growing the company to where we currently are today.

Roy was an asset to the Security Industry. He taught the majority of apprentices from other security companies and trained them up to become really good Technicians, some now holding senior management positions for local and national companies. Roy taught at North West Training Council for over 20 years as well as teaching for Skills for Security & Tavcom Training. Roy also had his own training company (Security Industry Training Association) and along with Martin Kane trained many apprentices on a national basis. He wanted the best out of people and helping others was what he did best.

Roy was a true family man, he leaves behind his wife Ann who he worked alongside for many years, his son Gareth who he worked with (trust me it wasn’t easy at times, but we always put our differences aside), his daughter Lyndsay and her husband Mike. He recently welcomed his first Granddaughter Grace into the family on 28th March 2020 who he unfortunately never got to meet in person but was able to see photos of her and we had a video call together, he was so proud of both Gareth & Lauren for bringing such a beautiful girl into the world. He also was lucky to walk Lyndsay down the aisle in May 2019, when she married her husband Mike. Roy was so proud of Lyndsay and it was a day that will never be forgotten by many. Also, in February 2020 he was able to celebrate Gareth’s 30th birthday party which was a joint celebration with Roy’s Niece Emily who was also 30. At this party many family and friends joined us, little did we know this would be the last party he would be at with us all. As a family we shared many happy memories, a lot of them spent up at Loch Lomond in Scotland, where Roy enjoyed going there to relax. We have memories of Picnics on the beach, days out in the boats, road trips and making many friends who will truly miss Roy.

His family meant the world to him and he would always put them before himself, even if it was the wrong thing to do, he was very stubborn at times! – Grace will always know what an amazing Grandad he would have been to her. Roy also leaves behind his family in America, Colin, Patricia, Cerys & Ceridwen along with all the family on Ann’s side (there is far too many to name!) and leaves behind many friends, colleagues and business associates. He will be truly missed by so many people.

The family would like to thank the Paramedics who attended the house on 4th April and all of the NHS Staff at Aintree Hospital. They did everything they could for him and gave him the best care possible to try and achieve the best chance of survival, unfortunately his body was not strong enough to fight it, although he did the best he could.

The Business will still continue to trade as normal as we have excellent staff who are holding it all together. During the week of 20th April, Gareth & Ann may be uncontactable but we have a great team working from home who will be able to answer your calls as we continue to trade and supply you with your fire and security needs.

Roy now joins his parents and our former Operations Manager Peter Grossmith who we sadly lost a few years ago.

We would just like to say a big thank you to all of our staff, friends, family and customers through what has been a difficult time for us all and everyone around the world.

Rest in Peace Roy (Dad) – 3rd February 1957 – 17th April 2020. 

Please feel free to leave any comments or memories below.

We have decided to setup a Just Giving Page in memory of Roy to raise money for Aintree Hospital NHS Foundation Trust. Any donations will be greatly appreciated. – The link is

We would all like to say a big Thank You to everyone for your kind messages and offers of support.

Get in Touch…

Talk to the friendly family business with expertise in the industry dating back to 1984.

Call Today on 0800 917 1441

Our Amazing Price Guarantee

We guarantee to beat any companies quotations, provided that:

  • The company is either SSAIB or NSI (NACOSS) approved
  • The proposed equipment is of the same specification as ours
  • You provide us with a copy of a written quotation
  • The quotation is less than 1 Month old

Orisec Wired External Sounder


We have just launched a new page on our website to showcase our External Sounders.

The Orisec Wireless Systems also use the same style External Sounder, however they are not illuminated as standard although they can be with the installation of an additional cost Power Supply. Also, the LED’s on the wireless sounders are controlled by a timer and do not flash 24/7.

View it here –

Charity Swim Across Loch Lomond

Gareth our Operations Manager is taking it upon himself to swim across Loch Lomond from Inveruglas to Inversnaid, an approximate distance of 1.5 miles to raise money for The Plaza Community Cinema in Waterloo Liverpool. Crosby Intruder Alarms have supported the Plaza for over 20 years and Gareth has now decided to help support them personally by taking on the challenge. Gareth can be sponsored by visiting the link any sponsorships will be greatly appreciated.

Peter Grossmith

Peter Grossmith

Peter Grossmith1958-2017

Peter started to work for Crosby Intruder Alarms in the late eighties and in the time since then, he became an integral part of our operation.

Over that period became much more than simply a work colleague, he became a trusted and valued friend that both Ann and I had complete trust in. So much so that we were happy to leave him to run the business during holidays etc. We argued on a number of occasions because he was forthright with his comments and was not scared to disagree if he thought that we were wrong, a trait that I really appreciated at times, but it was always in the best interests of the company.

Peter had an exceptional memory and all you had to do was mention a client’s name and he could give you virtually every detail about the installation, panel type, detector locations and even an approximate date that the system was installed. His technical knowledge was second to none and what he didn’t know, he found out about.

He had a wicked sense of humour and we often were on the receiving end of his jokes, but in all honesty, he could take a joke as well. I remember a conversation that I had with one long standing customer who said that they missed Peter coming in to see them because he “gave them hell” and the conversation was finished by her saying “and we gave it him back”. We all miss that as well.

Typically, when he was diagnosed with cancer he said that he was going to fight it and he certainly did. He re-organised his life and did the things that he wanted to do, culminating in a session gliding, towards the end of last year. He said that it was fantastic and didn’t know how he could top that. I suggested a parachute jump, but he said that it wasn’t exciting enough, so I said that if he wanted excitement, he should let me pack the chute, he declined my offer!

We all regularly went out for meals (see photos) and Peter was always the life and soul of the party, even though he was obviously in a great deal of pain.

Peter was a foundation stone of our company in every sense of the word and our company could not have developed in the way we have without his input, drive and devotion to us and our clients, we all miss him deeply.

Peter-4-300x191 Peter-5Peter Grossmith

Choosing your security provider

New Van

New VanIt’s been another busy week for us with many quotations and many acceptances. Remember when choosing your Security provider always use an NSI or SSAIB Accredited company not only does it give you peace of mind that your systems will be installed in line with industry standards but all staff will have been vetted to BS7858 this involves a Police Check, Credit Check and Employment and Personal References.

We as a company also take this one step further and are Trading Standards Approved meaning all staff are also DBS checked as well. All of our Technicians are Qualified and yesterday our apprentice Matty passed his Level 2 Exams so a big congratulations to him.

If anyone would like a free quotation then please give us a call or enquire via our website to qualify for an automatic 5% discount.

We offer solutions for Intruder, CCTV, Door Entry, Access Control, Nurse Call, Lighting, Public Address and Music Systems, Data Cabling, Fire Alarms and RING Doorbells.

Supporting the Plaza

Crosby Intruder Alarms have supported the Plaza Community Cinema in the Waterloo area for many years.

It’s always nice to be appreciated!

We at the Plaza would like to thank Crosby Intruder Alarms for all their support past and present. Recently they have upgraded our Fire Alarm system in the Plaza and the CCTV in both the Plaza and the Plaza Support Shop making both the Plaza and the shop safer for staff and customers.
Over the past 20 years they have supported the Plaza giving time and equipment freely. We would like to thank Roy, Ann and Gareth Williams and all their staff for being a true community spirited company. Highly recommended.
Please share to as many as possible and give them a round of applause.
Many thanks
Jan Dunn
Chair of the Trustees


Celebrating Thirty Years in Business

30 years in Business!

30 years in Business!

We are celebrating 30 years in Business!

Crosby Intruder Alarms have been operating from their Endbutt Lane home since 1984 when Roy Williams turned his back on his job as a television engineer to move into the world of home security.

Thanks to The Crosby Herald and Liverpool Echo for the articles about us in the paper and online.

Click here to view the article online.

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