Daya, people like you need and deserve all the support they can get to challenge decisions like this as they are just wrong especially given the circumstances you seem to be facing.
At 36 weeks after having being granted a request, to reverse that, to me seems to be dangerously close to opening the himself and the hospital up to medical neglect and is certainly showing a complete lack of awareness of medical issues surrounding tokophobia. Especially since you now say that you also saw a psychologist as part of this process! Even the most pro-ELCS consultants don't just dish them out as even with the NICE guidance they have to justify the decision and be able to say that the patient was fully aware of the risks.
People need educating on the subject as much as possible, and women like you need reassuring that they are not being in any way unreasonable and they have medical needs here that should be on a par with any other concerns during pregnancy and are not in any way shape or form "lesser reasons". They are part of the whole process and shouldn't be neglected. NICE recognise this. There is no excuse for hospitals not to do this.
It seems you have a really strong case to be answered here.
You have a right to be listened to and respected and any sudden changes to your care need better handling, explanation and support than you have been given - completely regardless of whether you do end up with an ELCS or not. You aren't being difficult or awkward in anyway, so don't feel you are being. Be a great big pain in the ass to them, as they deserve it. I fear it might be a bit of a battle, but don't loose sight of the what you have in your favour and what the issues are here.
The consultant you saw, under the circumstances, should be fighting any hospital policy with you instead of being an obstacle to you. Your health should be his number one priority, not the hospitals policy. Instead this consultant has left you in a position where you are seriously considering actions that you would not consider unless you were distressed and desperate, and which in a worse case scenario, could be potentially dangerous or put you or your baby at risk in some way. That means imho, at some point by the way he has handled your case, failed in his duty of care to you.
There are some awesome people who understand and are very supportive on this forum of birth fears (and risks and the politics of Maternal Request ELCS). I really wish you the best of luck, and hope everything gets resolved in a way you feel comfortable and happy with one way or another - preferably an ELCS at your local hospital.
Don't let the bastards get you down.