You could read the Red Cross article, Jalima. It's not very long. Just in case you want to find out more.
"These ‘costs’ are often mentioned in the same breath as immigration policy or net migration. This confuses the issue, as asylum seekers are here for different reasons.
Some papers do cite big, scary numbers about asylum support – but when you break down the figures, the amount actually becomes very small. A budget of £155 million is around £5 a year for each taxpayer.
That means a small amount of money – just over 1p a day – will help people who have fled traumatic and terrifying experiences, such as rape, torture and murder. It’s the sort of loose change that rattles at the bottom of your rucksack."
Per member of population, not per tax payer. Not forgetting, of course, that the population includes many asylum seekers. If you want to know how many, it's on the Red Cross website, but it's not as many as most people think.