No problem with recorded and pre-recorded NTSC (American) VHS tapes.. I must add, if somebody is going to tape something for you (to send over here) make sure they zero-up the tracking before doing the recording. (not many people ever think about this besides not knowing anything about it!)
As for getting VCRs in the U.K that are dual-standard (or even tri-standard) is not difficult at all and you don't have to spend a minature fortune to obtain them.. I've seen VCRs of these types as low as 89 pounds!! (I personally don't like cheapo equipment but even the less expensive VCRs should get anybody started.)
-- Anyways.. These machines ARE super easy to find, unlike what many people seem to think!
A misconception is that you can record or buy a PAL VHS tape in the U.K. and it'll work in the U.S..... A) no (unless somebody bothered to foot the bill (a large one in America) to buy a multi-standard machine.
Another one is that people think that they can simply plug in a dual-standard machine into another PAL machine to transfer their tapes.. NOPES, again.
As NTSC is something like 29.+ frames per second at 60 cycles and the PAL is around 26.+ frames per second at 50 hz, the dual standard machines simply "teases" the signal to your telly to obtain a "mock" 50-60 cycle signal and NOT truely converting NTSC to PAL.
Good news it that you CAN get VHS machines that are multi-standard and CAN playback as well as record in true standards that you want to obtain.. ie: recording your fav. soap in the U.K. (arrrrgh!) from a PAL encoding directly to NTSC to send to your friends and family in America so they can actually watch it with no specialized equipment!!
*(maninly used for family cam-corder junk)
Sorry it's brief but I'm sure the general jist is there now.