I take this to mean that your architect is unable to advise you on the planning process; is this correct?
If so I think you were unwise to go down the route of detail design with him.
People need to be guided on what is feasible from an early stage in the design, not led down a garden path that might have no happy ending.
Please read the Self Build FAQ on this forum
http://www.askaboutmoney.com/showthread.php?t=126261
This will give you an overview of the issues involved in assessing a site and engaging in the planning process.
I endorse what picassoman has advised.
If you find you're getting into difficulty because of the house design as opposed to a separate planning issue, be prepared to let it go and revert to whatever they want to establish your primary permission.
You will have a second bite at the cherry later if you need it.
Be careful of getting pulled in by some local "well connected" guy claiming to get you permission.
Make it no-foal no fee until permission and see him run a mile.
ONQ.
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All advice on AAM is remote from the situation and cannot be relied upon as a defence or support - in and of itself - should legal action be taken.
Competent persons should be asked to advise in Real Life with rights to inspect and issue reports on the matters at hand.
My best advice is that you should retain a competent building professional to advise you on these matters. [broken link removed]