Well, you certainly do need to check what your local JobCentre has on offer but you don't need to visit the office. Their entire database of vacancies can be searched here:
http://www.jobcentreplus.gov.uk/Internet/setLo cale.do?country=GB&language=en&page=/initialis e.do
Hints: Page 1 - Select 'All'. (There might be some suitable jobs in a category you've not considered).
That automatically takes you to Page 4 - Enter your postcode and choose a suitable radius.
Then choose the relevant hours, etc.
Chris
PS: I've just tried the site and it seems to be throwing up error messages. That's not unusual late at night (especially on a Friday). I suspect that maintenance is carried out around this time. So you might not be able to use the site straight away but it's definitely worth trying again later.
PPS: Good luck with the job-hunting ;-)