Thanks @Viktor
Just one issue - on another platform the price as pounds (1.01) instead of pence - although the trades are going through in pounds ( ie 30000 shares went through at £30k). Not sure if this is anything to do with first day trading. Just want to avoid confusion.
Just to update this post; RHM is shown as priced in USD on two other platforms. Do not know if that is why it is quoted as 1.01 rather then 101. Have the F/X rate to consider then as well then.