diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/AdminOperationsClient.cs b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/AdminOperationsClient.cs
new file mode 100644
index 0000000..b73503a
--- /dev/null
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/AdminOperationsClient.cs
@@ -0,0 +1,33 @@
+using Akka.Actor;
+using Akka.Hosting;
+using ZB.MOM.WW.OtOpcUa.Commons.Interfaces;
+using ZB.MOM.WW.OtOpcUa.Commons.Messages.Admin;
+using ZB.MOM.WW.OtOpcUa.Commons.Types;
+using ZB.MOM.WW.OtOpcUa.ControlPlane;
+
+namespace ZB.MOM.WW.OtOpcUa.AdminUI.Clients;
+
+/// <summary>
+/// <see cref="IAdminOperationsClient"/> backed by the cluster singleton registered in
+/// <c>AddOtOpcUaControlPlane</c>. Resolves the singleton proxy from <see cref="ActorRegistry"/>
+/// at construction time; each call <c>Ask</c>s the proxy with a 10s timeout.
+/// </summary>
+public sealed class AdminOperationsClient : IAdminOperationsClient
+{
+    private static readonly TimeSpan AskTimeout = TimeSpan.FromSeconds(10);
+
+    private readonly IActorRef _proxy;
+
+    public AdminOperationsClient(ActorRegistry registry)
+    {
+        _proxy = registry.Get<AdminOperationsActorKey>();
+    }
+
+    public async Task<StartDeploymentResult> StartDeploymentAsync(string createdBy, CancellationToken ct)
+    {
+        var msg = new StartDeployment(createdBy, CorrelationId.NewId());
+        using var linked = CancellationTokenSource.CreateLinkedTokenSource(ct);
+        linked.CancelAfter(AskTimeout);
+        return await _proxy.Ask<StartDeploymentResult>(msg, AskTimeout, linked.Token);
+    }
+}
diff --git a/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/ServiceCollectionExtensions.cs b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/ServiceCollectionExtensions.cs
new file mode 100644
index 0000000..39c96c5
--- /dev/null
+++ b/src/Server/ZB.MOM.WW.OtOpcUa.AdminUI/Clients/ServiceCollectionExtensions.cs
@@ -0,0 +1,14 @@
+using Microsoft.Extensions.DependencyInjection;
+using ZB.MOM.WW.OtOpcUa.Commons.Interfaces;
+
+namespace ZB.MOM.WW.OtOpcUa.AdminUI.Clients;
+
+public static class ServiceCollectionExtensions
+{
+    public static IServiceCollection AddOtOpcUaAdminClients(this IServiceCollection services)
+    {
+        services.AddScoped<IAdminOperationsClient, AdminOperationsClient>();
+        services.AddScoped<IFleetDiagnosticsClient, FleetDiagnosticsClient>();
+        return services;
+    }
+}