I am a freelance computer programmer who works on a contract basis with individual clients as well as companies.
As most of my clients are either overseas or far away, all of my work is done from home. This means that all contracts and invoices are handled digitally. e.g. I sign the contract and send it to the other party and vice versa.
Similarly the invoices for the client are also digitally generated and sent.
I do have tax returns available in original but it's not for a long period and my income now differs substantially from what it was during the last taxation period and the new financial year is not yet complete. Hence these invoices and contracts would be the only proof of my employment and income (apart from bank statements but that's not very reliable according to the case officers from last refusal).
So now If I wish to apply for a Standard UK visitor visa. How do I include these payslips, invoices and contracts in a form that would be considered reliable by the case officer?
Are printed copies of the documents acceptable as it'd be virtually impossible to get a physical paper invoice/payslip signed by the client over a courier in time.