As my water pipes were found to be lead recently, I've been doing some reading up about lead exposure. Worryingly I found that brass kitchen taps can be a source of lead, as brass contains added lead and this can leach into drinking water, often at dangerous levels.
It was a major news story in Australia, and over there they have the same amounts of lead in their brass as here in the UK so it could likely be an issue here. Stainless steel is safe as far as I know...are brass taps still on sale in the UK or has stainless steel taken over?