Simon
Welcome to the Forum.
I was in your situation myself early last year, its s**t. However, if you do get banned it is not the end of the world. The hardest part is getting the court case out of the way. I am a bit sceptical of solicitors and what they tell people. Magistrates are not mugs and don't like being taken for fools. Over the years, many people, included celebrities have tried various ways to get off on a technicality (some really ridiculous ones usually involving premiership footballers). From reading your own circumstances, the evidence is quite strong because of the collision.
From my own point of view (and this is what I would do, so please don't feel I'm telling you to do this!!!), I would just take my punishment and get the court appearance out of the way. I pleaded guilty and I did not think it was as painless as I expected - in fact, the Magistrates were great with me.
I assume this is your first drink driving offence? If you blew 66mg, the good news is you do not fall into the HRO category so you won't have to endure the pain of a medical towards the end of your ban. If you are below 87.5mg, you do not pass the threshold of probation, which involves community service. However, because of the collision they may treat this matter as 'aggravated' and involve the good people of the probation service - Price 1367 might be able to clarify this area as I would not like to say hand on heart, whether the probation will or will not be involved.
Any fines you incur should reflect on your personal situation. There is a form you complete, prior to entering court that the Usher will give you when you sign in at court reception. This allows you to detail your financial earnings and obligations, so it is important to be truthful about covering the other costs to the local authority for the traffic lights. The Magistrates should take this into consideration when considering a fine. Unfortunately, there will be court costs & a surcharge (which are £85 each) providing you plead guilty at the first appearance.
Regarding your job - is drink driving a discipline matter? If not, are there any support networks in place, such as remote working or being able to use public transport? If your job does not involve professional driving, you might be in a better position. Do you have a shop steward or union rep you can contact for advice? Employers cannot simply sack employees and hand them a P45, if you have a permanent contract of employment - there are certain legal procedures they have to follow. If you are presently off sick, I would leave any employment issues to one side until the court case is out of the way. One thing at a time!!!
It might seem the world has come to an end right now, but believe me in several months time things will be far better than they are now. I blew 113 & 115 at the police station and got banned for 28 months. Because I am a HRO, I have to do a DVLA medical shortly and go through the misery of the DVLA delving into my medical history with my GP. I also had to do 100 hours community service because I was above the 87.5mg threshold. Oh and by the way, I lost my job too because I was driving for a living (should have known better!!!).
My point is, that there are a few of us on here who were/are in a worst situation than yourself. Like you said, no one died and traffic lights can be replaced - this is the most important thing by far. Good luck.
CJ