Front Indicator Occassionally Not Working?

Hi there,

I have done a search but couldn't find anything the same as my probelm

Very rarey (maybe once a day) my front N/S indicator does not work-The rear and the side one do it's just the front one.  Obviously this causes the clicker in the car to go nuts and click like mad.

Then next time i signal left it will be fully working again.

Anyone any ideas? I was thinking it may be a dodgy connection somewhere along the line so on the odd occassion it doesn't work then it will be fine again

Any heko would be much appreciated as the dreaded MOT time is close approaching and knowing my luck when it's being tested it won't work as that is just my luck

Thanks in advance