Are those £150 courses in Greenwich? A friend went on one there and although she really enjoyed it, it only taught her a few nice tricks which you could learn from any good cake book with time and practice. They do rip you off a teensy bit, imho.
I don't have a cupcake business (although I do make them), but I do have a fledgling cake business.
For that I had to
- obtain a level 2 Food Hygiene Training Certificate (a 1 day course at a local college), which has to be renewed every 3 years
- register with the Local Authority as a food business and have my premises inspected, which included
~ having separate storage facilities for my ingredients and bakeware
~ separate handwashing facilities
~ have clothing to change into specifically for the baking/decorating and have my hair covered at all times
~ oven and fridge thermometers and separate, self-contained storage area of the fridge for business-related perishable ingredients (this translates as a series of klip-lock boxes I keep on a specific shelf)
I was told by the inspector that unless I was selling to middlemen to sell on (ie to cafes & the like) or making fresh cream cakes, I did not have to worry about sell-by dates, although I would be wise to put them on the products myself just in case (never underestimate the stupidity of the consumer, apparently!)
However, I do have to label everything I make and list all the ingredients, also including allergen alerts (nuts, gluten, dairy etc)
I was also told that if I make fruit-based wedding cakes I have to advise my customers re. proper storage of the cake as the old custom of keeping the top layer of the cake for a Christening means that you can then run the risk of getting sued xx years later when they unwrap a rotten cake that they've just shoved in a box!
I don't make a huge amount of money, it's a part-time business - I only went into it professionally as I was getting more and more 'friends of friends' asking me to do cakes for them and I thought bugger this, I'm going to do it properly!
I doubt I'm ever going to be able to give up the day job, though!