INCOME TAX ON UK INCOME

Hi,

Iam working in Pvt Ltd company in INDIA  and done part time data entry/job work of UK...recently... 

Now my income (Earlier not exceeded 2.5 lakh)   5 lakhs ( 5 -10 lakhs range ).

My question is , How to file the IT now...which form to be used for IT filing FY 2020-21,UK income where & how to show as they are not deducted TDS it seems. Can present indian employer ( Pvt Ltd ) deduct TDS on total amount which i received from indian company & UK company...Please explain...