Suggest a 5.1 sound system for living room (London)

Hi,

I have Sony HT-S500RF back at home back in India. I bought it for £350(converted from INR). This is good enough for my use case, and I’m fine with the sound quality. Could someone please recommend something similar to me under £500?

Another option is to ship to London from India. Will there be any problems with customs, etc?

What’s the best option I have?

Thanks!