Advice:
Measure the diameter of your thighs (carefully measure 1/2 way along) and waist, and write these down you exact weight at a defined time, e.g. just before you go to bed, or when you get up.
When the weather gets cold and wet, and you get fed up, repeat measurements and see what difference you cycling is making.
(don't do it weekly - changes too small to be encouraging).
The big problem is that we all spend money on kit and ever more exciting accesories AND we then have to spend money on new clothes as we lose weight!!!!!