Vick ....I think it will be pretty hard to get a work visa to Italy especially at the moment!!! As they are trying hard to get rid of as many immigrants as possible?
Citizens of India residing in United Kingdom have to apply for a visa to Italy in person at the nearest consulate of Italy in United Kingdom.
But this is what you need for business visa:
Letter from employer addressed to the Italian Consulate General explaining the purpose and duration of the visit. If self-employed, a letter from an accountant, company secretary, solicitor or local Chamber of Commerce. Applicants should also arrange for an invitation from the host Italian company or firm.
Try reading this link?
http://www.esteri.it/visti/index_eng.asp
While you can only apply for the (visto di lavoro autonomo) (not to sure if this is the one you need) at the Italian Consular Office in your area of residence, you will need to be possess the nulla osta, which can only be obtained in Italy.