I've had to replace my battery with a smaller unit to route some new pipes through the bulkhead for a heater install. So the original battery is available.

It's a Lucas 038 and a couple of years old. Holds charge well, nothing wrong with it as far as I can tell. Always kept on a maintenance charger when not in regular use (ie over winter)

Collection only due to the size and weight, from West Sussex (Gatwick or East Grinstead). Say £20 cash, new they are £50

Still available