For most households today, yes. A gigabit connection gives you download speeds of around 1,000Mbps — enough to download a full HD film in under a minute. In practice, the average UK household uses a fraction of that capacity even with multiple people streaming, gaming and working from home simultaneously.
Most households are well-served by speeds in the 100–500Mbps range. Where gigabit starts to make more sense is in larger households with many simultaneous users, people who regularly transfer large files, or anyone running a business from home with heavy upload requirements.
The more relevant consideration is usually what comes in the package rather than the speed tier itself. Gigabit contracts from some providers include better router hardware, faster fault resolution, or lower annual price rises — and those factors can matter more day-to-day than the headline speed.
It's also worth knowing that even if you don't need gigabit speeds now, full fibre infrastructure supports those speeds — so you're future-proofed if your usage grows. The question is whether you need to pay for the top tier today, and for most households, the honest answer is no.