Ian Taylor, as chief executive of an oil and gas trading company, presents an informed set of comments (Why I decided to give Better Together £500,000, News, April 7).

It would be useful and informative for voters if Alex Salmond and Nicola Sturgeon could respond to the key points raised in this very interesting article on the risk assessment, forecasting assumptions and business methods employed in the oil and gas industry. Future revenues and profitability of the North Sea oil and gas deposits are of crucial importance to the independence debate.

Ian Cameron

Glasgow

With respect to Ian Taylor's reasons for donating £500,000 to the Better Together campaign, I can readily understand how someone doing so nicely from the status quo would like it to continue. However, he falls back on the old scare-tactic reasons for voting against independence – something might happen in the future or the Scottish Government could do something. But then again, it may not happen.

No-one knows what the future will bring, but I would rather face it in a fair, caring European society instead of one slewed to favour rich, London-oriented people who have no appreciation of proper human values. Oil is a bonus to the Scottish economy, not our only economic wealth. How many small, viable European countries currently doing quite nicely thank you would give their eye teeth to have our resources and economy?

S Rogers

Hamilton

Your in-depth investigation of the pro-UK camp funding was welcome and most interesting. We look forward with interest to the same depth and intent being put into an investigation into the funding of the break-up-the-UK camp.

Alexander McKay

Edinburgh