WTD Folding bike HA6 Area

Hello,

I am on the look for a folding bike but am on a bit of a budget, I am moving back to Cornwall and need a folding bike for a 4 mile ride to the coach station.

I have been looking at something like a Issimo F100 as I don't want to go for one with very small wheels.

Biggest problem is budget, as I have no more then £100, would prefer to spend less.
within 50 mile of Northwood HA6 would be preferred as well.

Thanks in advance.

Cheers Steve