Before you take the plunge have a word with an insurance company,you may find they wont insure you unless you comply to all the latest regs. And dont even think about employing anyone,health and safety,wages,insurance,paye contibutions,rates,rent,electricity,commercial waste disposal costs,etc,etc......and your supposed to make a living out of whats left?? Dont want to put anyone off but you must cost it out first if you intend to make it a viable business........been there got the t shirt!