2 years ago I requested flexible working under the parent to a 5 year old law. Work accepted this and amended my contract. It said it was to be reviewed quarterly but nothing was said until a year in to the arrangement.
A year ago, they said they wanted a mtg with me, they wanted me to go full time, I said I didnt want to and offered a compromise (mtg them half way on the hours). They said they would think about it, I did not hear anything after this (and my hours did not increase).
Then last week they told me I would be getting a letter changing my hours back to full time. I have received the letter it says they want me to sign to go back to full time.
Is this legal? Can I refuse? My friend has said that as I have been doing the part time hours for 2 years it is now my substantive (?) contract?
All help gratefully received 