I have been cycling on my ridgeback whatever for a couple of years now, and now it feels too slow and clunky. I am ready to upgrade to something lighter and faster as I move to a longer commute - Hackney to South Kensington (8.5 miles). Single speed is very alluring and I had a great whizz round the block to test one out. Yes! This is the bike for me!! I felt like Beryl Burton. But - can anyone advise about hills as I will be up Margery Street/Pentonville Road every day. Can single speed do it? And - drop handlebars for commuting? Yes, or no? Any (non-technical) advice much appreciated.