The London Borough of Hillingdon website is being updated as necessary. Do take a look as there is information concerning topics such as free parking, rubbish and recycling arrangements, facilities temporarily closed to the public such as libraries and the Harefield Civic Amenity Site (dump).
https://www.hillingdon.gov.uk/coronavirus
In particular, the current advice regarding rubbish and recycling states:
We are currently operating all services as normal; however, as we prioritise general waste and dry mixed recycling collections, your weekly garden waste service may be affected.
We will continue to collect your food waste on your normal collection day, even if we are unable to collect your garden waste.
If your garden waste is not collected, please leave your bags at the edge of your property and we will collect them as soon as possible.