Do not hesitate to contact us with any query.

National Hotlines:

0800 917 1441
0151 920 6912

Office Fax:

0844 589 6912

Please click here

Alternatively, use our contact form to get in touch. All installations that originate from a website enquiry will result in a 5% deduction on the installation charge.

Mr & Mrs R.M. Williams T/A Crosby Intruder Alarms.

Office Opening Hours:

We are open Monday – Friday from 09:00 hours to 17:00 hours.*

If you call out of office hours an answer phone will be on, please leave a message and a contact telephone number and a member of our team will get back to you on the next working day.

If your call is an emergency please call the emergency numbers that are stated on our answer phone. Please note a call out charge will be charged for non-maintained customers if you require an engineer to visit.

*Please note the office will be closed on Bank Holidays and over the Christmas and New Year break.


20 Endbutt Lane,
Crosby, Liverpool, L23 OTR

Please accept statistics, marketing cookies to watch this video.
Merry Christmas & a Happy & Prosperous New Year from Crosby Intruder Alarms!
Roy, Ann, Gareth, Stephen, Lee, Sean, Colin & Matthew would like to wish all of our customers (past, present & future) & suppliers a Very Merry Christmas & a Happy & Prosperous New Year! Our office will close at 13:00 on Monday 24th December and will re-open at 09:00 on Wednesday 2nd January 2019. During this period we will operate our 24 Hour Emergency Service and be available for Quotations if required.