Trade and other receivables

6 Months Ended

Jun. 30, 2019

17.

Trade and other receivables

Amounts falling due within one year:


	30 June 2019		30 June 2018		31 December 2018
	£m		£m		£m
Trade receivables		7,713.8		7,422.6		8,062.2
Work in progress		419.5		405.8		366.5
VAT and sales taxes recoverable		270.6		245.5		264.2
Prepayments		391.0		420.4		287.3
Accrued income		3,731.1		3,672.4		3,541.2
Fair value of derivatives		10.0		2.1		1.3
Other debtors		634.2		565.3		578.8
		13,170.2		12,734.1		13,101.5

Amounts falling due after more than one year:


	30 June 2019		30 June 2018		31 December 2018
	£m		£m		£m
Prepayments		2.8		4.2		3.0
Accrued income		22.8		21.8		16.5
Fair value of derivatives		6.3		—		8.4
Other debtors		150.8		144.4		152.1
		182.7		170.4		180.0

The Group has applied the practical expedient permitted by IFRS 15 to not disclose the transaction price allocated to performance obligations unsatisfied (or partially unsatisfied) as of the end of the reporting period as contracts typically have an original expected duration of a year or less.

A bad debt expense of £14.0 million (period ended 30 June 2018: £21.8 million; year ended 31 December 2018: £55.1 million) was recognised on the Group’s trade receivables in the period.

The Group considers that the carrying amount of trade and other receivables approximates their fair value.