Insurance Renewal 22nd March 2016 Tax Investigation Insurance: Premiums for 2016-17 policy year. Premiums wef 1 April 2016: Limited companies with turnover > £10m …… £540 Limited companies with turnover < £10m …… £185 Partnerships and LLP’s ……………………………. £155 Sole traders ……………………………………………. £100 Private clients……………………………………………..£40 Our tax investigation insurance business is administered from our Bury St Edmunds office(Contact: Jill Holt).