Thanks everyone for your advice.
Just a quick update. We have finally found another place we liked. Offered 340K (asking price of 360K). Totally different agent this time. Again they asked for all our financial details so that could "qualify" the offer. I told them my wife had all the details and to phone her the following day. The agent said they would put the offer to the vendor immediately because they are required to do this by law, but they said they would not advise the vendor until our offer had been qualified.
The next morning my wife rang the agent just as the agent received word from the vendor that our offer had been accepted! At that point the agent gave up trying to find out our finical situation and things have been progress smoothly since.
Fingers crossed we be settled in our new place before much longer, although I understand that it can take a while.