关于不能带到英国来的食物，在网上查了查：

在网上查了查，如下：

Food and plants

From most countries outside the EU, you are not allowed to bring in any meat or dairy products. This is because they can carry diseases, which can devastate our environment and economy.

Other animal products may also be banned although you may bring in a small quantity of
some products from certain countries. For more information see leaflet ‘Bringing food products into the UK’ available from our advice service (page 16). Most fruits, vegetables, seeds and bulbs are also subject to weight or quantity restrictions. Some plants and plant products (including potatoes) and loose soil may not be brought into the UK unless you have obtained the relevant official licence. For more information, see leaflet ‘Bringing fruit, vegetable and plant products into the UK’ available from our advice service (page 16).

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相关链接：
A Customs guide for travellers entering the UK - Notice 1

Bringing food products into the UK

Bringing fruit, vegetable and plant products into the UK