actually, I was mistaken the RDS of my Mosfet is about 0.7 Ohms.

I bought these P channel Mosfets when CPC Farnell were clearing them out for about 5p each...

http://www.farnell.com/datasheets/468737.pdf

I think I bought about 100 ....I couldn't believe it when they arrived...every Mosfet was sealed individually in a 5cm plastic bag, & then inside the plastic bag, each MOSFET was then sealed in it's SMD wrapping! It takes me more time to get to the mosfet than to make my PCB!