Is it GWR Radio or GWRadio?  If it's GWR Radio does that mean it's Great Western Radio Radio? 

Anyway, here we see a link between the 1987 sticker and the 1990 one.  The inverted commas remain on staves but with the new logo behind them.

A nice colourful sticker for GWR FM.  Interesting that they dropped the inverted commas from the logo (see this sticker from 1988).  Perhaps signalling the reduction in chatter.

Also quite interesting to note that GWR didn't think it was necessary back then to promote their specific frequency.

Early sticker for GWR.  A speech and music station - that's why the inverted commas are on staves.

GWR launched in 1985 after the merger of Radio West and Wiltshire Radio.