Cannot Delete Publication

I have lost access to the Distributor and Subscriber servers, and need to delete the publication.
I managed to delete the (pull) subscription database, locally only, so the subscription still shows as orphaned, on the publisher server.

I am trying to simply delete all replication related components.

I am trying to remove the publication, but I get an error that it cannot be removed due to a connected subscription.

I then try to remove the subscription, usign the script below - but I get a message that the subscription does not exist?

Can anyone help with why?

(Remove Subscription Command)

--Select your publication database

USE NeXus

GO

DECLARE @publication AS sysname;

DECLARE @subscriber AS sysname;

--enter your publication name

SET @publication = N'NxPub';

--enter subscriber name

SET @subscriber = N'NxSub';

USE [NeX]

EXEC sp_dropsubscription

@publication = @publication,

@article = N'all',

@subscriber = @subscriber

,@ignore_distributor=1;

GO