UK is PAL-I; the other will displace the sound. And what's good in this respect for PS1 ought to work with PS2 but a word of caution.

The gadget if it costs £10.99 might just be for RF not AV (the clue lies in the differentt PAL models because the sound carrier on RF is 500KHz or 600KHz displaced from vision). On AV the channels are separate and there is no PAL distinction. So this gadget may not be want you want although it would work at lower visual quality.