DEAR EDITOR, - On a recent visit to Swansea, I noticed the price of diesel at a small Shell petrol station as being 86.9p per litre. The price at the Shell petrol station in Haverfordwest is 89.9p per litre, approximately 15p a gallon difference.

To compare Tesco prices, a similar differential exists. There is also a 5p per litre (23p per gallon) difference between unleaded and diesel, and since huge quantities of diesel are consumed by 'public' transport and road hauliers, it is bound to affect the prices we pay for goods.

Why this huge discrepancy? Is it because the government collects 17.5% VAT on top of fuel duty, therefore, the higher the price the more tax they get? Pre-oil refining in Pembrokeshire, we were always told that the high price on fuel was due to 'transportation costs'.

Now we have the refineries on our doorstep, we are still paying through the nose, compared, in this case, to Swansea. Would anyone from the refineries care to comment?

Wouldn't it be good PR to have lower prices for fuel supplied to local fuel retailers?

C. W. JOHNS Sunny Bank, Ryelands Lane, Kilgetty.