Business Intelligence and Market Research roles will follow similar paths and both should continue to prosper and grow. Entry level positions are normally on a salary of 22k. Progression can be rapid, meaning you can reach more senior positions in around three years. Within marketing this can mean becoming a research executive, senior researcher or an account director and this will normally give you a wage of between 25k and 35k.
Often responsibility for client contact and team management will grow as seniority levels rise and this may mean moving between companies to allow you to specify within an industry. As you reach senior roles you can expect wages to match your ambitions as salaries hit the 50k+ range. There are many opportunities to travel due to international business so foreign language skills can be a real benefit.