Depends on the size you want to do, a panel or three yep go for it. Anymore id strongly recommend concrete posts and gravel boards and good quality wooden panels
Go and have a look at them in the yards, read review after review of people in the UK who have had them done. Like some of the composite decking the fencing may need special composite or plastic fitments.
*Not* actually answering your question directlly but just had my front garden fenced with something called Jackson's Fencing, which apparently is guaranteed for 25 years, which was installed by Garden Fencing London who do a variety of fencing types, and have done a really nice job, so would recommend at least seeing if they do something suitable?
Comments
Here's a very brief discussion about composite fencing.
https://www.overclockers.co.uk/forums/threads/composite-decking-and-fence-panels.18775743/
https://forum.gardenersworld.com/discussion/1013866/plastic-fencing-good-or-bad
This one is slightly shorter.
https://forums.moneysavingexpert.com/discussion/3888335/anyone-have-composite-fencing
These guys do free samples
https://www.compositedecking.co.uk/composite-fences-gates/