Obviously, I haven't seen the programme yet - but if it concentrates on the performance issues associated with the operation of the Comet in the early days (leading up to a few particularly nasty accidents when the aircraft failed to complete the lift equation) - a good book to read is "Cone of Silence" by David Beaty.
The book is a very thinly veiled description of the early days of Comet operations and, like'No Highway', was also made into a thoroughly 'stirring' British film.