Need a home for 4 UK cars

Hello, I'm looking for some advice to help dispose of 4 UK registered cars on the 16th of October.

To raise money for a childrens cancer charity, me and 13 colleagues will drive rom Northampton to North Africa (morocco) in 4 days in cars we bought for £500 - twitter #rustbucketeers

I have arranged to scrap the cars in Gibraltar, but would prefer to sell to second hand dealer or persons for spares/repairs.

Is anyone interested in taking these cars off our hands or can recommend a dealership that will have them? it would would be nice to get something for them to donate back to the charity.

Thanks in advance.
Andrew