I have a new verb in my vocabulary. No longer do I simply ride or cycle. Now I either bike, or I trike. Today I biked into Oxford, tomorrow I shall trike to the library. Triking is the new modus operandi in my modi operandi for getting from A to B, mostly via C(afe), taking up as much room as I like, waving patiently and good naturedly to the sedentary, beta-blocked, grid-locked tin boxers.
Thanks to both iddu and cycleman for loaning me trikes to trike on (or is that in, with or by? I wonder what Fowler's advises?). These have been invaluable to nail down gearing and resolve myriad little issues to the point where I'm now gagging to get one of me own.
I fear I shall now become an awful bore each time it rains until I've found the correct uniform to trike in, which also works to bike in. Looks like I've come to the right place.