Dontpushme.
As the field you are in is rather specialised Here is what i would do,
I would write to the companies within your field (be personal with them in the sense that educate yourself on what the particular companies are working on at the moment, see if you can find any projects that capture your mind) I am being general here as i dont understand everything that your job entails. try and find a contact name within each of the companies, (if this means phoning them up and trying to speak to them first then all the better.
ANyway, let them know that you are in the process of marrying a British national and that you are in the process of moving to the UK and will be available for employment. then detailing your academic background / job history within the field. (let them know as a spouse of a British natioanal you will not need sponsorship as you will have a national Insurance number etc.
Hopefully they will respond to you in writing, (which then you can follow up when you know definite dates for arrival in the UK)
Jobs are difficult to find, but if you make the right steps it can only help, I wouldn't do this unless you know roughly when you will be moving to the UK. (as the last thing you want is for someone to offer you the chance of employment and have to turn it down.
Good Luck, let me know if there is anything i can do.
