Delays in Subscription Magazine deliveries

Is anyone experiencing delays in the delivery of subscription magazines from Key Publishing? I always used to receive the magazines for which I have subscription at least 2-3 days before they appeared in the shops but for the last 2-3 months magazines have either been delivered a number of days later after they are in the shops or I haven’t received them at all. This month I’m still waiting for delivery of the May issues of Combat Aircraft (available at the beginning of the month), Airliner World (available over a week ago) and Air Forces Monthly (available today). I’ve been in touch with Key who told me that Airliner World was delayed in sending out and should be with me today…but still no delivery. All very frustrating as ther are no issue with Royal Mail deliveries, or so I’ve been told.

I’m now considering cancelling my subscriptions and saving some money by just buying the issues that look interesting from the shops