You'd be eligible for Contribution-Based Job Seeker's Allowance (which is NOT means-tested), which is £72.40 per week:
https://www.gov.uk/jobseekers-allowance
That lasts for up to 6 months. Thereafter you could apply for Income-Based JSA but that IS means-tested (with your wife's income being included in the calculation) and you'd almost certainly receive absolutely NOTHING.
You
might be eligible for a reduction in your Council Tax but that's also means-tested and I doubt that you'd get anything.
Otherwise (apart from the Contribution-Based JSA for up to 6 months) you're expected to live on your pension and your savings (plus your wife's income) until you find work.