If yo uare really lucky, you may have a chance of a free mains lead:
http://www.which.co.uk/news/2014/12/russell-hobbs-irons-recalled-is-yours-affected-388071/
and
http://www.bitterwallet.com/do-you-have-a-dangerous-russell-hobbs-iron/81702
and
http://www.bbc.co.uk/news/uk-30361937
As for the screws they are probably "tamperproof" versions of Torx screws. You can get sets of bits cheaply enough:
http://www.screwfix.com/p/titan-security-screwdriver-bit-set-32-pieces/1445h
http://www.toolstation.com/shop/p92461?utm_source=googleshopping&utm_medium=feed&utm_campaign=googleshoppingfeed&mkwid=shF5jhR3U_dc&pcrid=66162905543&pkw=&pmt=&gclid=CNuU5djQ28kCFUJmGwod8AIFJg
This may help:
http://www.howtomendit.com/answers.php?id=465465
Although the very fact that you have asked suggstes you may not actually have much idea what you are doing. Get someone who does know to do the job for you - or simply get a new cheap iron.
Cuddly Wuddly
December 2015