Paul Oter wrote:

I suppose signs which said "First Capital Connect trains to King's
Cross, St Albans, Luton and Bedford" and "First Capital Connect trains
to Highbury and Islington, Finsbury Park, Welwyn Garden City and
Hertford North" would be adequate if laborious, but these would need to
be changed every few years whenever the TOC changed. Much better to
have standard route names which don't keep changing.

Or keep it completely factual and use the above without the "First
Capital Connect" part. Branding is completely unnecessary on these
signs, and example destinations will likely be more useful to the
people who actually need the signs in the first place.

Neil