So I've googled and finding lots of different types of advice for this. It's just started happening in the last day.
He is 5 months old and obeys the "leave it" command. Thing is - he is doing this when I am out of the room. He never attempts it when anyone is around.
This morning I found 2 tea towels on the floor and thought hmmmm. He must have jumped up - then I saw him chewing and realised it was my mobile! Thankfully, all still in one piece and working. He must have just got it. Tonight it was half a pizza I was in the process of making and then two baby bottle teats and lids from the drainer.
So - how do we stop this from happening in the first place?
The kitchen is the one area of the house he is allowed free reign during the day as it has immediate access to the garden with door left open.