Jennifurball, I'm from Preston too!!
If you haven't booked already, I can highly recommend Take A Peek in St Helen's. Its only £65 for the dating scan, we had one last week at 8 weeks.
I know its a bit further but only took us 40 minutes to get there and it was such a nice place, the staff were lovely. We had a mmc in May, I told her about it and she was really sweet and said come on then, lets see if we can set your mind at rest....and she did! She found the heartbeat straight away and it was amazing.
She knew how uncomfy I was needing a wee so she let me go and have one so I was comfy for the rest of the scan!
She talked us through everything, even answering questions we had about the mmc that we never got answers for.
I can't recommend them highly enough and the price was fab compared with the ones in Preston.
Good luck with wherever you decide, I'm sure all will be fine hun. Keep me posted, nice to see someone else from Preston!!xxxx