Business plan

I am looking for an Uk (london ) business advisor that can help me produce a 3 year business plan that grows and expands my exisiting business .
I direct a children's dance service sole trader business ,that has have evolved over many years . The businees started as a community project and has grown into a profitable business , the business is currently specific to a neighbourhood and i imagine it moving to other neighbourhoods .It is not a franchise and i am not looking for marketing advice but developement .