Leading scientists will have salary increases of several thousand pounds if they use bicycles or buses to go to work. Scientific Generics, one of the UK's biggest technology consultancies, is offering to make the payments in a bid to reduce objections from local residents to the extra traffic generated by its expansion. The company, based 13km outside the university city of Cambridge, said it would make the payments if it was allowed to proceed with its $8m plan. The expansion would involve doubling the number of employees to 400.