Return to the Planet of the Apes (1975)

I recently found a DVD boxset of Return to the Planet of the Apes in a charity shop which I bought for £4, which is a ridiculously cheap price. I considered it an interesting find because it was a Region 1, US copy. However, that is not so unusual these days as most DVD players are now region free and Amazon (UK) sells media from all over the world. As for the show in question, I vaguely remember Return to the Planet of the Apes being shown on UK network TV when I was a child, probably circa 1976. Back then it would usually take a year or so before US shows made it onto UK television. From a commercial perspective, the entire Planet of the Apes franchise was beginning to run out of steam. I was 8 years old at the time so had missed most of the film releases. However, I enjoyed the live action TV show hence an animated follow up had obvious appeal to a child of my age.