Unless I am totally mistaken a distance learnining course only provides theoretical subject knowledge yet to get an A licence you need to show relevant tech/hands on experience.
LRTT's course is very comprehensive combining theory and skills based training, however the Barry College, Brooklands distance learining courses only appears to "skim" the surface.
Before considering a distance learning course, ask questions to the providers along the lines of :- existing student backgrounds, target audience, techncial experience, pass rates etc.
These courses are not cheap so be mindfull!