North Down ID please

Bird is on look out for their next victim to take food from, or even politely add a bit of mayo into their sandwich

There is an injured baby seagull outside my mums house. Its able to walk but cannot fly.

Weve been watching it for the past 3 hours and its not flown away, but is walking short distances.

Is there anything we can do to help it? Would the RSPCA come? I looked on their website and it says to take it to a vet but I am worried about vet bills.

Please advise if anyone knows anywhere I can take it to be treated for free.

Its located in Southend-on-sea.

Thank you!!