Just had a look on the DMGRS site and see a cambelt kit with water pump included currently listed at £139.99.
Cick And the thermostat kit is listed at £39.99.
Click There are options for bits and bobs with the thermostat kit and the cam seals if required can be selected as an option with the belt kit for a further £3.49.
Postage not included in those prices but Matt does do international shipping. Best to contact him for details and to see what if any deal he can do for you. His contact info and preferences for it are given on his site.
Click