eNautilus wrote:

So, in summary, the current very reliable and punctual
Sevenoaks-Blackfriars service, as operated by SET, will be replaced by a
much less reliable, frequently cancelled and generally useless 'service'
as provided by Thameslink/Worst Capital Connect/Whatever It's Called
This Week.

Not quite. The service you describe will actually be jointly operated by
FCC and SER (with TOC changeovers at Blackfriars).