Barker Biscuits, a company which started on 1 January 2014, had identified the following balances on its Receivables Ledger:

As at 31 December: 2014 £ 2015 £ 2016 £
Total trade receivables including: 49,310 39,551 37,690 Bad debts:
Alpha Inc 2,500 Beta Ltd 560 Gamma plc 630 Delta Partners 1,700 Doubtful debts:
Epsilon and Company 300 Zeta Inc 2,600 1,600 1,200 Omega LLP 1,700 Sigma plc 1,800 Show the relevant extracts from the financial summaries for each of the three years.