wow
Guys firstly apologies for the delay in reply, i simply had had enough and needed a break as the stress is getting overbearing. Anyway, i came back to check and update and tbh surprised of the number of replies for which i feel bad for no updating sooner.
Anyway here goes, since my last message, i looked into this further and decided to go for a new meter/ supply for the above extension. Why? Because it serves 2 purposes, i will need it for the long term to have a separate supply to make property separate and secondly it will eliminate any pressure problems at source. If that dont work then i will get someone, maybe still the existing guy to look at suggestions of blockages etc kindly mentioned above to be resolved. Incidentally, you think i should go for a U6 or U16 considering it will be about a 15 to 20 meter run now to boiler?
I've just read some responses above and feel the need to mention to those who keep banging on about GSR people should have looked at the job, Let me clarify and tell you that the current guy is GSR and before him i had 2 others who were GSR look at the job and NONE, i repeat NONE of them said that tapping into the current supply should be a problem and no problems were anticipated. The first fix was installed by another GSR.
For those thinking i am not a genuine questioner, just move onto another thread, especially AWheating; you seem to have an issue with this and keep repeating the same thing without any value AT ALL to your comments. Unlike other kind commenters here, you seem ssoooo negative and stuck in your own ways. Please move onto another thread (as i suggested before) if you cannot add value.
Thanks so much again to ALL who helped me here. I am just someone trying to learn as much as i can (unwillingly) because i have been thrown at he deep end to make sure the correct steps are taken to complete the overall extension project. I started with ZERO building experience and can probably now manage a build from scratch very easily after managing this project. Learning about the gas side is another part of the learning journey. Having said hat, i dont think i will be takin on another project in a hurry!!
Thanks again ALL