"Like any PAYG SIM , you have to top up (even the "Three" 200mb Data SIM eventually )" I kinda beg to differ on that one: https://www.hotukdeals.com/deals/three-data-reward-sim-now-free-with-200mb-free-every-month-with-no-topup-required-ever-at-three-3155011 "Three Data Reward SIM now *FREE* with 200MB FREE every month (with no topup required, ever!), at Three Enough said ... Lol.
so its more of a deal than a freebie .. good one tho! :)
I'll use mine in that time anyway. Just the cheapest option I can find for a second SIM. Main one is with Three but there are odd times where I don't get any signal I can use it. Will only likely be data at 1p for say Google maps or WhatsApp. Just covering my back really.
You have to order the SIM before O2 send you the offer. It's not mentioned on the web page.....If you don't get the offer, don't bother activating :)
Mine expired after 3 months, I also thought it was 6 months