You'll need a road bike in good, working condition and a helmet.
Whilst we all look out for each other, club runs encourage self sufficiency. From our experience here are some things you could bring with you each ride:
-In case of a mechanical you could bring: Inner tube x 2, pump, levers, chain tool - this should ensure you can get home!
-In case of an emergency you could bring: Packable foil blanket, mars bar, charged mobile phone.
-To keep you moving you could bring: a bar/gel/cake/piece, 2 bottles with water or juice, an emergency gel is handy for those days when you lose your legs!