This is an OEIC rather than an ETF. I don’t think VG offers a £-listed equivalent ETF. You can buy VNGA80 but it’s in euros and you’ll likely want to avoid the forex fee.
You could replicate it within a pie relatively easily, eg VWRP plus VAGS. I think the Lifestrategy funds overweight the UK, so you could add VMIG or VUKG if you wanted to do likewise.