The UK Government (DEFRA) has published its risk categories for EU SPS imports: Please see the table on Page 30 of the draft TOM (see here) which sets out the controls and indicative checks for each risk category. To view the Plants and Plant Product TOM Risk Categories click here. To view the Animals and Animal Products TOM Risk Categories click here.
DEFRA has also published model health certificates for competent authorities and exporters in EU and non-EU countries that show import requirements for Great Britain, the Channel Islands and the Isle of Man. They are available here.