Neither item has a transformer, just a plug for which I can get a 3 prong adapter easily. To get a proper power converter is expensive. Also, cos of the PAL/NTSC conflict will a Japanese DVD player work in the UK anyway? I know already that it plays UK DVDs.
Another option is to take it in and have the technician change the power supply inside the box to match the voltage where you live. That would be the most convenient and safe way, but not the cheapest.
;-D Good luck.
I live in Japan, and all MY (non kitchen) appliances have AC 100 ~ 240v written on them! This means that my appliances only need a travel adaptor if I take them to England with me ... not an expensive power converter! (Incidentally, it would probably have been cheaper for you to buy it here in Japan, because lots of Japanese tourists need them! In the UK they're less popular, so more expensive.) So check your appliances, and if they have AC 100 ~ 240v on them then you're OK!
As for the DVD player, videos and DVDs have different region encoding systems, so if it can PLAY UK DVDs then you'll be able to see them on your TV ... if you look here,
http://www.amazon.co.uk/exec/obidos/tg/browse/-/502554/202-9902035-7551865
you'll see that Japan and the UK are both region 2!! So there shouldn't be ANY problems...!!!!!!! (Famous last words!)
; )
Check both products for the AC details, and I hope you don't need to buy a power converter!