Although I have improvised with an episode from K&A this one is a gem and worth the effort. Grimy
ceramic tiles...biological washing up liquid (used for clothes - doesnt matter how cheap it is) mixed in warm water and a little bleach. Gloves, scrubbing brush, damp cloth and a window squeegee (I think thats how it's spelt). Have another bucket to hand filled with warm water, start scrubbing with the
floor brush (the one like cinders used) scrubbing in circular motions, get a damp cloth to wipe the parts which you have scrubbed, then get your squeezgee and wipe away the excess water, get a clean mop soak in the bucket of warm water (prepared earlier) and wash over the part you have scrubbed and squeezgeed, leave to dry and admire your hard work!!!! And your arms will be lovely and toned too!!