Since the light dimmers are operating in the 433Mhz range, then theoretically the URC "i" series or RTI remotes should be able to control them. The biggest problem is that no remote can "learn" RF codes, only IR codes. All RF codes have to be taught to the remote through it's programming. There lies your next problem, URC and RTI are both American companies and your lighting control is a British company.
Of course HomeEasy makes a uversal remote you might want to look into:
[Link: homeeasy.eu]