Need some advice buying a keyboard to learn piano

I am interested in learning to play the piano. I'm practically a beginner - I took some lessons in school alongside my clarinet playing but didn't get overly far. I don't have a massive budget, maybe around £300 (could be stretched to around £500 if absolutely necessary).

I've read the FAQ and it taught me a few things but much of it didn't really mean anything to me as I don't know anything about pianos or keyboards. But it does seem to me that 88 and weighted keys are pretty important and maybe the pedals?

Which keyboard would you recommend and is there anything else I need to know?

Thank you!