Estate agency - sole agent sale - but letting?

[BERGS2]

Quickie in here -

If our agreement with our extate agency for the sale of our house was from April - June

is there anything to stop us putting it up "to let" with another agent?

(IIRC the paperwork is for sale only)

I just need a contingency really, as our buyer has yet to book a survey - and i'm starting to get nervous -

just to compound matters Mrs Bergs is due our first child on the 31st July

any advice gratefull recieved!

BERGS