Since U are in London, I assume u are using a PAL PS2, and Pal game. U will need an AR2 (Pal versiuon). If I am incorrect, and U are using an American unit, then U should get an AR2 (US vesion), or a codebreaker.
Or, U can get an Xport, (either Pal or US depending on your system), assuming U have a PC with a USB port, and use MK's program to get what ever caes U want.