SD2IEC? Looks like an original 1541? They are ace. I have similar device for the Spectrum that I bought from a guy closer to you than me.
http://lotharek.pl/product.php?pid=56
Came very quickly and works a treat. It was even pre-loaded with lots of 'goodies'. He also sells a newer model with...
If you are a fan of the Oliver Twins then keep an eye out on Chris Wilkins as he is planning to make a book based on the history of the Oliver Twins and I believe one of the pledge levels he is planning for the Kickstarter is for them to design a new Dizzy game for the old systems...