First of all, turn off the mains water supply (as above). Use a small flat-headed screwdriver to remove the tap head. Once you have removed this, use a spanner to remove the cartridge (the part underneath the head), normally anticlockwise, so that you can replace the washer. The washer can be turned upside down and replaced back on the cartridge sometimes instead of replacing. If it does need to be replaced, you should be able to find the size you need at any DIY store. Then replace the cartridge and tap head before turning on the water supply again.

Get some good quality drain cleaner solution from your DIY store. Use regularly to prevent build up (a couple of times every year). Avoid putting foodstuffs and fats down your drains as these will cause blockages. Shower traps and baths can also benefit from regular treatment with unblocking agents to prevent hair and soap scum build up.

Turn your thermostat down 1 degree and you could save around £40 a year. Put thermostats on your radiators if you don't already have them. If you already have thermostats, turning them down slightly can have a dramatic effect on the energy you consume.