Acer Aspire 3 15.6in Pentium 8GB 256GB FHD Laptop £299.99 at Argos

This is a low end, low powered CPU which came out in 2019..

Try to go for an Intel i3 (or AMD Ryzen 3) as a minimum.

Celeron tend to be the weakest Intel CPUs, with Pentium the next up from that.

Then it goes up i3, i5, i7 (and now i9)

I would never buy a Celeron or Pentium laptop or desktop.

N5030 CPU. Look at the deals posted yesterday, Samsung Galaxy Book2 with same specs but with i3 12th gen CPU is/was £299. Miles better deal.
Also a Vivobook with Pentium Gold 7505 was posted for about £280. That's a better deal too, the CPU is close enough to i3 11th gen.
There is a Lenovo ideapad 3 with only 4gb ram but the RAM can be upgraded. That's £250 and has a Ryzen 3 5300u CPU. Again much better deal.
Not knocking down this deal, but IMO all the above mentioned laptops are a better buy. (edited)