Depends on how broad your definition of subsidy is. Oil and gas companies operating in the UK are some of the largest direct contributors to the UK exchequer, and so the tax breaks they're able to claim for certain activities are also relatively large. (with the government indirectly getting those tax breaks back and more by taxing domestically-sold fuel at high rates by world standards)

Renewables, by contrast, make up ~7% of the UK's electricity generation and <1% of its fleet of road vehicles, so even the relatively generous subsidy schemes don't make that much of dent in the UK budget.