King's Lynn-based Porvair has notched a 32pc rise in revenues driven by strong growth from its filtration divisions.

The EDP Top100 company said pre-tax profits were in line with expectation in the nine months to August 31 this year, while revenues in its micro filtration division surged 40pc ahead on last year. Net debt was significantly lower at £0.3m. It comes as the firm saw its metal filtration businesses expand by 15pc over the same period, with aerospace revenues also continuing to 'grow steadily'.

The business said its new plant in Wuhan, China, had continued to perform as expected, with revenues from aluminium filtration remaining strong