Are there any kit builders near Romford

[happyjo]

Gun dog and adrian.
Would love to chat roadster.
I have started to clear garage, but too much stuff.
So purchase of 12 x 6 shed needed first to clear garage.
I have got to work out how to PM on here, so bear with me why I send you a msg.
One quick question though.
I have been looking up prices for steel, do you know of any companies nearby to purchase the required steel.
I have checked W L Cooke and they want £95 for the 25 x 25.

Secondly I would like to test my abilities to cut and fabricate.
Is there a part on the build that can be started first, I was thinking FF but if I buy from Handyandy then there would be little point, is there any other part that you could think of.

Martin