The military site was previously used to accommodate Afghan families evacuated during the withdrawal from Kabul in 2021, according to the Home Office.
On Friday, Crowborough’s MP Nus Ghani said residents were “incredibly anxious” after the first asylum seekers were moved in.
She told BBC Radio Sussex that the site was “wholly inappropriate” and confirmed she had invited representatives from the Home Office to prove how it was “safe, legal and complaint”, after it was previously ruled out for use.
The Crowborough site has 24/7 security with CCTV and strict sign-in processes for residents, the Home Office added.
Sussex Police and Crime Commissioner Katy Bourne said policing the town over next 12 months will cost £5.6m, but she was yet to hear back from the Home Office.
The BBC has approached the Home Office for a response to her point.