Thanks Mike (and everyone else) lots of very useful info, intend to visit Battersea before the end of April, also a comment earlier about Claude Butler bike being 'brought in', quite a lot of the bikes available seem to share a very similar design, apart from the obvious 2 wheels!!!Hi Ian,
I'm not too many years younger than you and had a heart attack 3 years ago. I turned to electric bikes as my only form of exercise and I love it. I'm out very day and sometimes ride 40-60 miles in a weekend. The best and biggest selection for you to see is here at e-bikes london (Battersea) store which has been suggested above. You can demo bikes and "borrow" one for a few hours to go round London or Battersea Park and try it out. It's a no-obligation service and all of the staff are very helpful.
Mike
Ian