In a laboratory on the Wellcome Genome Campus outside Cambridge, a technician places a small tissue sample into a sequencing machine no larger than a desktop printer. The sample is from a common British earthworm, Lumbricus terrestris, an animal that has been turning the soil of these islands since the last Ice Age. Within hours, the machine will have read the worm’s entire genetic code, all 130 million base pairs of it, and uploaded the data to a publicly accessible database. It is a small act, easily overlooked. But multiplied by 70,000, it becomes one of the most ambitious scientific projects ever undertaken in Britain.
The Genomic Britain programme, a collaboration between the Wellcome Sanger Institute, the Natural History Museum, the Royal Botanic Gardens at Kew and a consortium of universities, aims to sequence the complete genome of every wild species found in the United Kingdom. The project, which builds on the pioneering Darwin Tree of Life initiative, has received £200 million in initial funding from the government’s Life Sciences Sector Plan and an additional £100 million from charitable and private sources. The target is to complete the sequencing within ten years, creating a comprehensive genetic reference library for British biodiversity.
The scale of the undertaking is difficult to comprehend. The UK is home to approximately 70,000 species of animals, plants, fungi and protists. Of these, around 20,000 have been genomically characterised to some degree, but the vast majority remain unread. The programme will require the collection, preservation and analysis of tissue samples from every species, a logistical challenge that involves field biologists, museum curators, citizen scientists and an army of volunteers criss-crossing the country from the chalk downs of Sussex to the peat bogs of Caithness.
The scientific value of the project is immense. A complete genomic library would transform the study of British ecology, enabling researchers to understand the genetic basis of adaptation, to trace the evolutionary relationships between species, to identify populations at risk of inbreeding and genetic decline, and to develop more effective conservation strategies. It would also provide the reference data needed for environmental DNA sampling, a technique that allows the presence of species to be detected from traces of genetic material in water, soil or air, revolutionising the monitoring of biodiversity.
The economic case, as outlined in a report published alongside the programme’s launch, is equally compelling. The authors estimate that the genomic library could generate up to £3 billion in economic value over twenty years, through applications in agriculture, pharmaceuticals, environmental management and biotechnology. The agricultural applications include the development of pest-resistant crop varieties informed by the genomic data of wild relatives, the improvement of soil health through a better understanding of microbial communities, and the breeding of livestock with enhanced disease resistance.
