I've been thinking about doing this for a while and the recent rides over gravel trails and steep descents spurred me on to do it. The brakes on the Boardman where Avid BB5 which dont have a particularly good reputation for effectiveness as they are regarded as entry level single sided cable operated brakes. I got on with them but you had to be cautious in descending and give yourself plenty of braking time. However I I found that after nearly every ride I needed to adjust them to keep them at peak effectiveness. I was probably ultra conscious of doing this as a cycling friend had these brakes on his bike and going down a steep hill, failed to slow down enough and crashed resulting in a broken collar bone, which took ages to heal.
We oldies dont bounce so well.
So I bit the bullet and upgraded to TRP Spyres, which although still cable operated have dual pistons so the pads are operated evenly on both sides.
Old brakes
New brakes