The Lezyne Micro Drive is a pretty good front light for commuting.
- The highest beam setting is goodenough for off-road riding (it's not as good as an Exposure Joystick but it's a lot better than the Cateye lights we used to think were the dogs a few years back ) and it chrges up via a USB port.
Full mudguards are a definate for all the reasons above (SKS for the win)
Get used to going commando.
Keep your 'saddle contact area ' in good order,clean and fresh 24/7.You'll be greatful and it'll impress your lover how well groomed you are.
Vary your route -it breaks up the monotomy and you never know who might be following you.
Say good morning as you nod to all other cyclists- and smile.
Everything above about clothes + keep a sweater at work. You may need to get warmed up quick on occasion.Cooling down is fine but getting warm again can sometimes be a b#ll ache.
Rack and panniers or rack top bag are definately the way to go.I've been using Altura ones for almost 3 years and they have been fine (even in this mornings epic storm.)If you want an alternative go for a courier style bag as opposed to a rucsack.
You don't need a yellow hi-viz jacket or vest!!!!
Tell people it's 10 miles not 5. Kudos,and it will impress the ladies.
Buff's are your friend for most of the year.
Thin socks + sandwich bags + thin socks = improvised wet and/or cold weather socks.
Having two waterproof jackets and another helmet is not essential but can be difference between a cold damp start.
Wool doesn't smell
Synthetic cycling kit smells like dead pidgeons if worn more than one day.
Don't wear a skinsuit to work
+1 for Schwalbe marathon tyres.
Peanut butter, rice cakes and bananas - nom nom nom.
And finally - I always find shaving at work after the ride in most enjoyable. A quick splash of Old Spice and I'm set for the day.
ps remember - no matter what the weather's like,it could be worse. You could be in a car!!!