Ride with the standard pads until they wear out* and then switch to sintered ones. The change over takes about a minute and requires no tools.
Sintered pads are brilliant in BB7s - remember you will never boil the brake, so you can run them year round and on big descents as well as UK ones with no worries.
*Buy some sintered pads now - if your brakes come with organic pads fitted, they really won't last long in a UK winter, so carry the spares around with you on rides.
'92 Breezer Storm, '92 Breezer Sky, '93 Merlin Mountain, '94 Ibis Mojo, '96 Breezer Ignaz X, '97 (or is it '98?) Breezer Twister, Sunn Team Ti road bike
***Proud to be ordinary***