giffgaff SIM only deals: how they compare on price this January

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We run through each of giffgaff's best SIM only plans this month and compare them on price with every other mobile network in the UK. SIM Sherpa is your trusty guide. Last updated: 5th January 2021.
giffgaff's best SIM only deals
The best overall giffgaff SIM only deal this month
Looking at all giffgaff's options on SIM only this January, the deal that jumps out to us is their 80GB for £20 one below. It's a 1‑month plan and comes with unlimited minutes and texts too:
It's a good deal by giffgaff's standards but price-wise you can still beat this plan on other providers (even ones that still use the O2 network). Here are the networks offering it cheaper:
They're also offering 9GB for £10 on SIM only currently
For less monthly data, we'd say this is one of giffgaff's best deals on SIM only this month too. It's a 1‑month plan, comes with 9GB data, unlimited minutes and texts for £10 a month:
If you're open to joining other networks than giffgaff, you can actually get a similar deal for less, even with providers whose SIMs also use the O2 network. See the networks that beat it here:
£12 for 10GB is giffgaff's next best SIM deal in January
For more monthly data, have a look at giffgaff's 10GB SIM below at £12 a month, as it's another good deal. It's on a 1‑month plan and comes with 10GB data, unlimited minutes and texts:
While it's good enough to be in our pick of giffgaff's best SIM only deals, other providers do still have similar plans for less, even ones that also use the O2 network. Here are the networks where it'd cost less: