2020 £m	2019 £m
Amounts owed by subsidiary undertakings	104.7	25.8
Group relief receivable	3.8	1.4
Deferred taxation (see note (xi))	0.4	0.6
Other receivables	1.0	0.4
Prepayments and accrued income	0.8	0.6
	110.7	28.8

Included in debtors are amounts of £0.4 million (2019: £0.6 million) due after more than one year relating to deferred tax assets.

Of the amounts owed by subsidiary undertakings, £47.2 million is due after more than one year (2019: £0.6 million). The provision for impairment against amounts owed by subsidiary undertakings is immaterial and has been considered in accordance with IFRS 9. Amounts owed by subsidiary undertakings are primarily unsecured and repayable on demand. £100.6 million attracts interest of 1.7% and between 0.71% and 1.56% above LIBOR, the balance is interest free. £1.8 million of the £100.6 million is repayable in 2023. £45.4 million of the £100.6 million is repayable in 2027.