I had the same info confirmed to me last week, the site shuts up on 31st March. The word is that Alfa are planning to open up a direct showroom in Cardiff that will be operated by them and not a franchise. There is nothing on Victoria Park Motors website giving any information. IMHO the closure of this dealership is no loss, the service I have received is appalling, I had already decided I would make the hour drive to go to Eric Ashmoles in Swansea in future before I heard of this.
The guy that runs the franchise also operates Victoria Park Mazda next door so I would hope the staff get alternative positions there (some had already left and gone there).
Let us know if you are lucky enough to get a response from Alfa UK