[Spencer]

I think you’re right. The flatter looking cake logo from the first version of the endcap also appears at the start of the Central version of the ITV 1989 generic ident.

youtu.be 

I would imagine it was part of the 1989 presentation package provided by English Markell Pockett.

So i take it V2 of the 1989 Central endcap was introduced in either 1989 or 1990 which was seen on programmes including the 1991 reruns of season 2 of Thomas the Tank Engine & Friends on Children's ITV, among others, where the cake logo on the V2 endcap is exactly the same as the 1988 ident except that the fourth and fifth blocks of the cake logo were coloured from light green and light blue to green and blue respectively?

Also, was V3 of the Central endcap actually introduced in 1993 or 1994 where the Central cake logo is larger and more colourful which was seen on the 1994 series of Blockbusters and the original 1994 airing of the Mr. Bean episode "Back to School Mr. Bean", among others? Am i right?

Can anybody explain about that?

My guess is V2 came about after someone at Central decided they weren’t happy with the generic endcap they were provided with.

I think V3 must have come about at the same time as some new cake idents were introduced regionally (1993 I think, looking at YouTube examples). The resolved logo in these had the same look as this version of the endcap.