Aidan Stanger wrote:

* The era of large supersonic aircraft is over, and future ones are
likely to have between ten and twenty seats. Landing fees at Heathrow
and Gatwick will be much higher per plane, as they will be dominated by
superjumbos. LCY is quicker to get to from London than the rest of the
airports are. STOL capability should not be a problem for supersonic
aircraft, as they have a very high power to weight ratio.

Only if they're a lot quieter will they be allowed at LCY! But I'm sure
your assuming that!