Faulty element? Other 'hot' cycles do not work?! Hotpoint Aquarius 1200Wd62?

Hello,

The water in my washing machine doesn't seem to be heating up at a 40 deg wash however it still washes etc but, when i put the washing machine on a 'hotter' wash, it just sits there and does nothing apart from a small buzzing sound. Any ideas? Obviously, i'd just go and buy a new one but it's not really the time of year to be doing that.

Thanks for any advice offered...

Regs