Found this on screwfix at half price £4.99!
Effective, fast-acting contact killer of fleas, bed bugs, clothes moths and other household pests. Residual action delivers post-treatment control for up to 12 weeks of emerging insect eggs and larvae. Ergonomic trigger-handle delivers clean and easy, targeted application of insecticide spray. Contains tetramethrin and permethrin.
Hope it helps someone save a few quid as it seems like its £10+ everywhere else at the moment.