Indeed, the Yodel delivery guarantees delivery within 6 business days from shipment.
As Wednesday the 1st May was a bank holiday here in France (our company is half-French/half-British), and Monday the 6th May was a bank holiday in the UK, the two warehouses' schedules have caused a slight "delay" due to fewer business days during this week and next.
Therefore unfortunately, your parcel, along with all our other parcels that were prepared for shipment to the UK between 30/04/13 and 03/05/2013 and were delivered latest 10/05/13. Tracking is showing that your parcel was delivered on the 9th May at 18.36 and signed for, so you should have it.
I do sincerely apologise for any inconvenience caused, and please don't hesitate to contact us again if we may be of further assistance.