I have been asking questions and doing research.
I think that I have decided on walking from my B&B to Victoria Coach.
Something I have read says that it take about a hour, more or less. For me, add on some time because I walk slowly. it will give me a chance to say goodby to London my way and maybe see some sites I did not see until this walk.
I will be reserving a seat in advance on one of the direct coaches very late morning or early afternoon. In fact, I will probably be doing this today or tomorrow.
I heve looked into the train from Waterloo as well as Victoria station. The fares are all affordable and time is reasonable but I think for me, walking to Victoria Coach and taking the coach is the more relaxed way for me.