Dual Immersion heater

I have a Pullin 082521 27" Imm. heater, two elements, two thermostats.(Standard 2 1/4" fitting).
One element has failed. Can't seem to source a replacement.
Are they still avaliable, (or an equivalent)?

Dual elements (sink+bath) are available, but surprisingly expensive and not widely stocked.

A DIY or discount shed will probably not have them. An electrical or plumbing trade supplier will stock or be able to order them.

Try here (about £50)
http://www.tlc-direct.co.uk/Products/RRTS27T.html

IIRC although they have an integral changeover switch, the terminals inside the head are accessible so you can wire them to an external changeover switch if that is what you have. It's probably worth renewing the heat-resisting cable if yours is old or incorrect.