I have already done some research, the links below will help.
These are some helpful tips and websites to look, given on some forums when I asked for advice.
Brexit or Covid probably would be the best topis to write on :
Aviation: FAQs for 2021 (parliament.uk)
COVID 19 | Civil Aviation Authority (caa.co.uk)
also ; UK, EU and US aviation industry sanctions | White & Case LLP (whitecase.com)
There are so many individual pieces of legislation, many of which are EU regulations that have been retained in UK law.
Take a look at:
The Air Navigation Order 2016
Civil Aviation Act 2012
The Rules of The Air Regulations 2015
Commission Implementing Regulation 2017/373 (retained in UK law)
www.legislation.gov.uk/ will be very helpful.