If the battery is replaced at a garage, they may be happy to take the old battery from you for recycling. Alternatively, you could use your local Civic Amenity Site/Recycling Centre which will accept most types of household waste (incl. vehicle batteries) from local residents, without charge.
Various businesses, such as garages, licensed Authorised Treatment Facilities (vehicle dismantlers), metal recycling companies or other waste removal/treatment companies might be happy to accept your battery without charge, in view of the residual value of the scrap metal. You might find the following website helpful to help you find such a business: http://www.recycle-more.co.uk/banklocator/banklocator.aspx/
If you have an electric powered or hybrid vehicle, there are specific obligations for producers/importers of such vehicles that are intended to help you deal with the batteries that power these vehicles when they become waste. From 1st January 2010, businesses that place hybrid/electric vehicle batteries onto the UK market have an obligation to arrange for the treatment and recycling of these batteries. If you have such a battery and need advice, please contact: Brian Setchell at brian.setchell@gm.com or 01582 426534.
All battery producers in the UK are required to be registered with the Government as part of an EU-wide initiative to increase battery collection/recycling and completely prohibit the landfill/incineration of automotive and industrial batteries. Our battery producer registration number is BPRN00474.