Wanted: Complete Single Speed Large bike (for 6'4 bloke) up to £300

Hi there

New to the forum but can see there's a stack of useful stuff here...

i need a commuting bike asap. Looking for my first SS as my commute is flat and i only ever use 2-3 gears anyway. Used to have plenty of cruisers/bmx's back in the day so looking forward to the relatively simple maintenance on them.

looking to spend £250 max for complete working bike...

Would like:

• Light bike to carry up a flight of stairs
  
• Riser bars (am used to hybrid /more upright seating position)
  
• Capacity for fitting mudguards and rear rack
  
• freewheel
  
• puncture proof tires
  
• obviously something big enough for a 6'4 bloke!
  
  

don't care much for colours or hip styling, more interested in function than form. also not totally up with the lingo/jargon yet.

Look forward to any pointers from anyone.

Cheers,
Tim