Whilst preparing its financial statements for the year to 30 June 2018, a company discovers that (owing to an accounting error) the sales figure for the year to 30 June 2017 had been understated by £100,000. Trade receivables had been understated by the same amount. This error is regarded as material. An extract from the company's draft statement of comprehensive income for the year to 30 June 2018, before correcting this error, is as follows:

	2018	2017
	£000	£000
Sales	1,660	1,740
Cost of goods sold	670	730
Gross profit	––––– 990	––––– 1,010
Expenses	590 –––––	560 –––––
Profit before taxation	400	450
Taxation	80 --------	90 -------
Profit after taxation	320 –––––	360 ––––

The additional trade receivables of £100,000 are still outstanding at 30 June 2018. The sales figure for the year to 30 June 2018 shows only the sales revenue for that year and does not include the sales of £100,000 which were omitted from the previous year's financial statements. 

Retained earnings at 30 June 2017 were originally reported as £1,220,000. No dividends were paid during the two years to 30 June 2018. It may be assumed that the company's tax expense is always equal to 20% of the profit before taxation.

Required:
(a) Revise the extract from the statement of comprehensive income for the year to 30 June 2018, showing restated comparative figures for the year to 30 June 2017.
(b) Prepare an extract from the company's statement of changes in equity for the year to 30 June 2018, showing changes to retained earnings.