They have different 'sub' sites for every country.
Ryanair Ireland:
ryanair.com/ie/en
Irish law applies
Ryanair Uk:
ryanair.com/gb/en
Uk law applies
Etc
Just got this information from someone even if it's the gb site they are subject to Irish law
ryanair.com/gb/en/cor
9. Applicable law and jurisdiction.
It is a condition precedent to the use of
any Ryanair Group website, including
access to information relating to flight
details, costs, etc., that any such party
submits to the sole and exclusive
jurisdiction of the Courts of the Republic
of Ireland and to the application of the
law in that jurisdiction (except as
otherwise provided by mandatory
consumer law provisions), including any
party accessing such information or
facilities on their own behalf or on behalf
of others. In the absolute and sole
discretion of Ryanair, a legal action may
be brought by Ryanair against any party i
breach of these terms and conditions, at
its election, in Ireland or the place of
breach or the domicile of that party, and,
if more than one party, in the domicile of
any one of those parties, and all other
parties shall submit to that jurisdiction.
For the sake of clarity, where a passenger
or person carried or to be carried
pursuant to a contract of carriage with
any of the Ryanair Group airlines wishes
to institute proceedings against a Ryanair
Group airline on foot of that contract for
carriage, then those proceedings shall be
brought by the passenger solely in
accordance with the provisions of the