6 scaling UK health-tech start-ups to watch Health-tech dominates the latest round of scaling start-ups selected for a six-month UK accelerator. Tech Nation has announced the newest cohort for Upscale, its flagship growth accelerator focused on mid-stage tech companies in the UK. Upscale targets fast-growing tech companies and aims to speed up their progress. To qualify, companies must be backed by venture capital, having raised a Series A funding round, or be seeing revenue of £1.5m to £5m. Upscale companies must also be growing at a rate of about 10pc month-on-month. Previous participants in the accelerator include banking start-up Monzo and e-commerce disrupter Depop.