I am going to be married mid-June and I realize that I cannot work until I get my spousal visa, which should be by the middle or end of June or beginning of July. (My fiance visa expires 12 July.)
In the US, if you are accepted for a position, you are expected to start within two weeks, the standard amount of time for giving notice of resignation to your old job. Companies like to have positions filled immediately. Despite having excellent qualifications, you can lose a job simply because you didn't apply fast enough.
I've noticed that on UK websites, companies and recruiting agencies often ask how soon you can start working, with possible answers being as late as 3 or 6 months from when you apply. I've also read on this board that UK companies can take a very long time to make hiring decisions.
So, would it be possible or even worthwhile to start actively looking for jobs in the near future, knowing that I would not be able to start working for a number of months? I would clearly explain my situation on my CV and cover letter, so there would be no risk of doing anything illegal. When the time comes when I am legally able to work, I would prefer to have my job search already well under way, rather than just beginning. Being new to the UK job search experience: CV writing, interview procedures and so on, I could use as much job hunting experience as possible.