I’m afraid the only answer to that is going to come from the local planning authority but there is no reason why it should refused on that alone.
When it comes to access, the local authority are generally more concerned about extra traffic going onto the road and the width and display visibility at that point.
I the whether it’s possible to widen the drive at that point or whether you are stuck with it because, for example, that is the width between the building the boundary. 3.7 m is still 12 feet wide.
Range Rover is 2.22 m over the mirrors. A transit van is 2.5 m over the mirrors..
Assuming this is your own drive, it probably becomes more of a practical problem for any potential buyers who may not like access over a very narrow drive because although there is plenty of room, for most of the length, there is not a fantastic amount of space at that point.
Why you could not write to the local authority and ask them whether this would be a bar in principle although you will find many local authorities want the money and will insist on a full application being made before they will even open their eyeballs.
I’m sorry, I know this doesn’t give you a definitive answer but the reason is quite simply because the only definitive answer will come from the local planning department
If I have answered your question for you, at the top of the page, you should see a rating facility. Can you please rate my reply 3 stars or more because that really helps me? Please note you are not rating whether it’s favourable, because sometimes you may not get the answer you want, but basically my knowledge and way of dealing.
The thread does not close and I am happy to answer any questions you may have arising from this.