Answer
Is composite decking worth the extra cost over timber?
Over its life usually yes: more upfront, far less upkeep, longer lasting.
In short
Over its life, usually yes. Composite costs more to buy than timber but needs almost no maintenance, does not rot or splinter, and lasts far longer, so the lifetime cost often works out lower. Near water, such as around the Cotswold Water Park, it is the clear choice. Timber still wins on upfront budget and for a natural feel.
Arrange a consultation
Send a few photographs and a sentence about the site. We will reply personally.