It is not that easy in today's market. A friend of mine is out of work since June and the agencies do not even have temping work, despite her being prepared to work for a pittance at this stage to keep herself sane.
Re: oh was made redundant 3 weeks ago - any tips on entitlements from the state / rev
You are entitled to a Stautory redundancy. This will be paid regardless (dending on OH service to company)
This site will be very usefull, get OH to give them a call so he knows his rights. Small things like employer has to allow for days/time off for interviews etc..also check out the Redundancy calculator. (if havent already)