Hi David
Just to let you know that a post doesn't appear until it has been approved by one of the moderators. So that's why you haven't seen an answer. So I've deleted your other two posts that ask the same thing.
I don't know the answer to your question, and the best thing is to raise it with the DWP if you're worried. I don't think they are going to be concerned. You're still in this country and set off on the 22nd of June, and you will be back on the 20th July, which is 28 days. I, however I am not the authority - so best to check with the DWP.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems