we too have a 'u' shaped kitchen and it depends on what you're trying to achieve really, ethel. if you want maximum storage then leave the sink where it is and use the corners very much as zacmaster suggests (we have exactly what he/she describes and they hold a heck of a lot of stuff. if you put rarely used stuff at the back then it's really not a problem). if you're not so worried about storage space, then go with what you're thinking and move the sink to the side, although i personally think you'd regret it.