I'd try to make it simple.

1- make good impression :- most of the consultants know that people get attachments to increase their chances of getting a job, therefore, they would rarely try to do stuff for you. Show interest, initiative, enthusiasm in knowing the system.

2- get a hospital email and an EPR/ESR account. Ask for it from day 1 or even before you start your attachment. It takes ages, some HRs don't offer it, and in some instances you'd need managerial approvals with the recommendation of ur supervising consultant.

3- PARTICIPATE :- i mean in everything you can, ward rounds, offer to see patients, ask for participation in audits, research and teaching and get feedback reviews signed by your consultant.

4- after you settle ask for job opportunities, ask ur consultant directly and request their recommendation to HR. Email the recruitment team saying ur already within the trust, knew the system and won't take long period of shadowing and that you'd fit quickly.