thanks for all the comments guys!
my arse is bruised from the journey to work, it hurts to sit down on anything (I have padded shorts!)
the way home took 15 minutes (journey time), that doesn't include my handlebars nearly coming off (the bar wasn't bolted tightly), had to stop coming downhill at 30mph pretty quick, luckily I'd bought some tools so could fix it. Then straight after my chain came off and got tangled.
Now it doesn't go into gear properly and it won't go onto the largest cog by my feet and it clicks when in the others, I guess I need to adjust something.
Oh, and to top it all off now the bars can turn and the wheel stays still so I guess that's loose too (is that the alan key on the top of the handles or the spanner bit on the column?)
guess I shouldn't have believed
Halfords safety check!!! ( i HAD to buy from Halfords before you say anything!)