Hi All,

Thanks for the help.... just in case anyone else has the same problem
with their Tipo hydraulic clutch cylinder (circlip type), go about it
like this;

Take off the battery tray by undoing 4 bolts
Locate the Slave cylinder underneath the battery tray which is fitted
into a hefty steel bracket. Don't try to remove the cylinder yet....
instead, remove the bracket which holds the cylinder. This is done by
first removing the bolt on the top of the bracket which holds it onto
the engine, then remove the other two bolts which are difficult to
undo, but the hardest one (nearest the front of the car) can be reached
underneath the wheel-arch.
Now undo the pipe which goes into the cylinder and put something
underneath the pipe in case there is any fluid left in the pipe. Now
you should have the cylinder and bracket free from the car and you must
now bend back a metal tab holding the cylinder into the bracket and
remove a circlip from the actuator side of the cylinder.
Go to a main fiat dealer (Halfords only supply the version which is
bolted on, not the circlip type) and buy a new cylinder... I paid 23.54
+VAT pounds for one from  SLM near Hastings. (You can get them from
Ebay if you want to for about 30 + delivery.
Fit the new one in reverse of taking it off, but before putting in the
battery tray, undo the brass bleed nipple on the new cylinder just a
small amount and get someone to press down on the clutch (Making sure
there is a lot of liquid in the brake fluid reservoir first) when the
liquid squirts out of the nipple, make your assistant hold the clutch
down and then tighten the nipple when you are sure all the air has gone
out of the cylinder. Put the battery back on and it's done.... Takes
about 3 hours to do.

Pete