I have distant relatives who moved overseas years ago - their daughter (a few years older than me) has been in touch to see if she could stay with us while she tries to do some studying in the UK.
She is convinced Oxford is part of greater London.
She is convinced, despite me sending her train times, that the drive into London would be quick and easy as a commute.
Is there a gentle way to tell someone that, um, possibly, what with it being the country I grew up in, I might possibly know better about this?!