On-demand security lets you book an SIA-licensed, DBS-checked security responder in London when you need one, not weeks later. Message Sparta Guard on WhatsApp, Messenger or the app, and local responders are alerted instantly. Across Central London, someone is usually on site within the hour, with no contract, no forms and no call centre.
Tap WhatsApp, open Messenger or use the Sparta Guard app. You get a reply straight away.
Share your location, what is going on and when you need someone: right now, later today or on a date you choose.
Licensed professionals near you get the job at once, so nobody waits for an office to open or a rota to be rewritten.
Your responder arrives, deals with the situation calmly and lawfully, and keeps you updated on WhatsApp.
| Route | Best for | What to expect |
|---|---|---|
| The fastest start, especially in an urgent situation | Automated reply straight away, then updates in the same chat | |
| Facebook Messenger | If you already use Messenger | Automated reply, then the same responders |
| Sparta Guard app | Repeat bookings, saved addresses and booking history | Android and iOS, about two minutes to install |
All three routes reach the same pool of SIA-licensed, DBS-checked responders, so choose whichever is quickest for you.
Need a guard for a planned shift instead? See how to hire security guards in London.
Both have their place. This is how they compare.
| Traditional guarding contract | Sparta Guard on demand | |
|---|---|---|
| Time to book | Quote, then days or weeks to start | Minutes, often on site within the hour |
| Commitment | Minimum term, notice periods | None, book per job |
| Who attends | An assigned officer on a rota | A local SIA-licensed responder who accepts the job |
| How you stay informed | Account manager, email, reports | WhatsApp updates from booking to arrival |
| Best for | Fixed, long-term static cover | Urgent, short-notice and changing needs |
If you need the same officer at the same desk every weekday for years, a contract provider may suit you better. For everything that does not fit a rota, on demand is faster and simpler.
Sparta Guard is not the police or an emergency service, and never a replacement for 999. If someone is in immediate danger, a crime is in progress, or there is a fire or medical emergency, call 999 first. You can message us afterwards if you need a licensed presence while you wait, or to secure the property once the emergency services have left.
He has not answered his phone all evening. A DBS-checked responder visits, confirms he is safe and messages her within the hour.
Two door supervisors cancel at 8pm on a Saturday. The manager books replacements on WhatsApp before the queue forms.
A communal door has been forced overnight. A responder secures the entrance and stays until the contractor arrives.
You pay for each job, with no subscription required. The price depends on the service, the time of day and how long the responder stays. Customers with regular needs can ask about membership plans.
Sparta Guard responders cover Central London, including:
Learn more about Sparta Guard as a London security company.
On-demand security means booking a licensed security professional when you need one, without a contract or a long wait. With Sparta Guard, you message us, local SIA-licensed responders are alerted instantly, and one attends, usually within the hour across Central London.
Across Central London, a responder is usually on site within the hour. Timing depends on your location, the time of day and the type of professional you need, and you get updates on WhatsApp.
No. You can book through WhatsApp or Facebook Messenger without installing anything. The Sparta Guard app for Android and iOS is useful for repeat bookings and your booking history.
Yes. Tell us the date and time when you message, and we will arrange cover for then. On-demand booking works just as well for a party next weekend as for a problem happening now.
No. Sparta Guard responders are licensed security professionals, not police officers. If someone is in danger or a crime is in progress, call 999 first. We can provide a presence while you wait or help secure the property afterwards.
Message us now and local SIA-licensed responders are alerted straight away.
Simple. Discreet. Always local.
Get a price on WhatsApp