We have just released a new feature on ExpertFlyer that allows you to select a UK Point of Sale for the Flight Availability search. If you click the Show Advanced Options button at the top of the search page, then a Point of Sale option box will become visible at the bottom of the search form where you can select from either a USA or UK point of sale.

Also, any Flight Alert that is subsequently created from a Flight Availability search that used the UK Point of Sale will itself be checked using the UK Point of Sale. The Point of Sale is also now an option on the Create New Flight Alert form as well.