In all the London journey times efforts the local services are being wrecked
Up until May the London Bridge to Horsham service calls all stations from Purley to Horsham (plus NXG and NWD) providing a very useful local service enabling passengers around the local area to get to work, college, shops ad relatives (as did the old Victoria to Horsham service before it was diverted to London Bridge).
To gain slightly faster journey for Angie Doll's home town the new Peterborough to Horsham service skips Coulsdon South, Merstham, Earlswood and Salfords complicating journeys and creating long waits to get between stations. ELD and SAF are worse hit and they are not minor stations (especially as 1,800 houses are being built near Salfords station with another 6,000 in planning currently).
So currently the 9 miles Earlswood to Crawley (largest local shopping & employment centre) takes just under 20 minutes each way on a direct train and is relatively well used. In May it will require a change at Horley or Gatwick be 26 mins to Crawley and 34 back, the latter with a 15 minute wait at the delightful Gatwick Airport station.
You have also lost direct services from Coulsdon or Merstham to Earlswood and Salfords during the off peak and weekends (peak Gatwick to Victoria services do call at all)
Similar Issues for Purley to Crawley which is now fastest via East Croydon and presumably a more expensive fare.
Why can't Peterborough to Horsham train follow pattern of old London Bridge to Horsham train it is replacing, it would be much simpler for all local passengers.