This is a typical regional ident. Note the blue background.
This caption was used when there was no in-vision announcer. Peter Davies, an out-of-vision announcer, used to do the continuity in the daytime between 9.30 and 5.40 from 1980.
Peter also read the local news occasionally (rarely!). [Alex Trelinski]
Peter was also the first announcer on Sky Channel when it moved to the Astra satellite in 1989.
(Thanks to Stephen Hyden for info)