What to carry on the bike
Every time I ride I carry the same items. Be it a 15mile bimble or a 120 mile day on the Lap of Anglia. These are my suggestions.
At least two inner tubes. If you use one then restock it from the support vehicles but please replace what you use.
A pump
At least one drink
Tyre levers, multi tool, spare chain quick link, old piece of rubber to use as tyre patch, Emergency haribo, electrical tape
Lights
Fully charged phone
A medium sized bandage. I have used these three times on other cyclists.
Money. Handy for bribing local law enforcement or just buying coffee and cake.