Small angle neutron scattering (SANS) will be used to characterise the structures of aggregates formed between the anionic conjugated polyelectrolyte poly{1,4-phenylene-[9,9-bis(4-phenoxy-butylsulfonate)]fluorene-2,7-diyl} (PBS-PFP) and oppositely charged surfactants in aqueous solution. Particular emphasis will be placed on the systems with the lecithin mimic di-lauroyl-sn-glycerol dichlorhydrate (1212R), where preliminary SANS measurements at ISIS suggest formation of ribbon-like structures. To facilitate structural characterisation, specifically deuterated surfactant and polymer will be used. These results will be used in collaboration with small angle X-ray scattering and dynamic light scattering studies to obtain detailed information on the aggregates.