https://www.unifrog.org/  
Unifrog is a great resource for research and for creating short lists of post-16 providers. 

https://nationalcareers.service.gov.uk/careers-advice/career-choices-at-16 

https://amazingapprenticeships.com/app/uploads/2016/12/AA-Yr2-Poster-7-1.pdf 

https://resources.careersandenterprise.co.uk/sites/default/files/2022-06/CEC%20Post%2016%20Booklet_Endeavour_FINAL.pdf  

https://www.findapprenticeship.service.gov.uk/apprenticeshipsearch  

https://www.talkingfutures.org.uk/ 
Website aimed at parents/carers.

https://careerpilot.org.uk/parent-zone/choices-at-16 
Covers many parent/carer queries.

https://www.apprenticeships.gov.uk/influencers/support-for-parents-and-guardians
Apprenticeships explained for parents/carers.

https://careers.startprofile.com/page/home-page
You can create yourself a START profile for up-to-date labour market information. 

https://www.wsfg.waltham.sch.uk/page/?title=College+Open+Evenings+and+Dates&pid=2376
School website listing open evenings.

https://www.gov.uk/ 
There is further information on the gov.uk website, for example, search apprenticeships within gov.uk.