If it had ‘Church Aid’ titles it is unlikely to be one of Warton’s craft. His were consistently unmarked often with bogus 5T-xxx registrations. If it had those titles it would almost certainly have been a DC6B not a Dc-7. The various church organisations used Icelandic or Swedish registered Dc-6 B or C-97 Stratocruisers either US or Swiss register. I think most of Warton’s aircraft retired to Basle after peace broke out.
Hope it helps
Be lucky
David