Few on here
Car Boot Sales - Lancashire
At this time of year I would be tempted to wait a few weeks as people tend to be skint after Christmas & New Year and will be waiting to be paid again.
I can reccommend Colne Leisure Centre on a Sunday morning which is on the list, we have done a few car boots there over the years they are well run and we have always done pretty well selling.
There is usually an option of also hiring tables & chairs to save you lugging those over with you.
Hope that helps