[Closed] Mobile Wifi provider advice please

Evening All,

After moving this weekend we will be spending a few weeks in limbo land waiting for our new place to be ready and were planning to use my old mobile wifi dongle as there is no internet. I last used this back in May when I went camping , took out a rolling 30 day contract with 3 which was duly cancelled the next day and thought that was that until I checked my credit reference and this has had a negative impact due to not maintaining it for 6 months ffs

Because of this I’m a little reluctant to do this again so am looking at going down the PAYG route. Does anyone know if I can use any sim in the 3 dongle (Huawei E5220) or does it need to be unlocked like a mobile phone would?

While I’m at it can anyone point me in the right direction for a good PAYG deal?

Thanks