Before being elected to Parliament, Sollom worked as a business consultant in the energy sector, and served as a Liberal Democrat councillor on
South Cambridgeshire District Council for Harston and Comberton from 2018 to 2022. He was the Liberal Democrats' parliamentary candidate for
South Cambridgeshire in the
2019 general election, coming second with 42 per cent of the vote. Sollom was elected as the Member of Parliament for the constituency of St Neots and Mid Cambridgeshire in the 2024 general election, with 19,517 votes (36.9% of the vote) and a majority of 4,648 over second-placed candidate
Anthony Browne, a
Conservative. St Neots and Mid Cambridgeshire was a new constituency created by the
2023 review of Westminster constituencies—Browne was the incumbent MP for South Cambridgeshire, parts of which were removed to create the new seat. Sollom's victory represented a nominal Liberal Democrat gain from the Conservatives, in line with the massive swing away from the Conservatives nationwide. ==Personal life==