Hello Robbb,

The old Raleighs used whitworth tool sizing, different from metric and standard. I do not know if the Pashleys did the same. If they are standard, then you have less of a headache to tool aquisition.
Some metric and standard can be used with varying degrees of success on whitworth, but you would need to get a raleigh multitool(i got mine off ebay for $5) to get a good start.
Generally, I have done everything I needed to do on my bike with that multitool, robogrip pliers, some assorted sockets, adjustable crescent wrenches, screwdrivers, a hammer and plastic drift(for the crank cotters) and a steering wheel puller for the cranks. With the exception of the multitool, I already had everything.
I do not know the proper tools to get, but then I am constantly making or modifying(like grinding an open end wrench to fit whitworth) what I need so I am not a good one to answer that.
Perhaps some of the more experienced can come up with a list for you.