Advice sought regarding use of Portuguese dongle in UK

Folks,


I live in Portugal and have a PAYG Portuguese dongle - the model is ZTE
MF632.
I am coming back to the UK for a visit soon and I need internet access.


Is it possible to use my PT dongle in the UK, and if so, how?

e.g. Can I buy a sim? If so what is best?
What would I need in terms of software?
The stuff that came with the dongle asks for a password and then
gives me the option to go online etc. But I guess it only works the
with the PT provider.



And pointers gratefully received!


Thanks - Adam