import re
 
 
data = [['company1', '<U+042E><U+043F><U+0438><U+0442><U+0435><U+0440>'], ['company2', 
 '<c1>lom<e9>kszer Kft.'], ['company3', 'Ernst and young'],
   ['company4', '<c5>bo Akademi']]
 
for index in range(len(data)):
    data[index][1] = re.sub(
        r'<U\+([0-9a-fA-F]{4})>', 
        lambda x: chr(int(x.group(1), 16)),
        re.sub(
            r'<([0-9a-fA-F]{2})>',
            lambda x: chr(int(x.group(1), 16)), 
            data[index][1]))
 
print(data)
 
				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