If the standard valuables limits is not sufficient then you need to increase your valuables cover limit up to a maximum of £20,000.
The valuables limit you choose is included in your overall contents sum insured. For example if you choose £40,000 contents sum insured and a £10,000 valuables limit and your home contents were completely destroyed we would pay up to £10,000 for valuables but would not pay more than £40,000 overall for your contents and valuables.