I have a number of Rolls-Royce Plc shares, currently trading at 611.00p. Not knowing anything about share prices, is that 611.00 GBP per share, or 611p per share ? Thanks in advance, to which should be an easy question to answer.

Pounds I think, see here - http://www.google.co.uk/finance?q=LON:RR

RR has market cap of $11billion (dollars or pounds, I'm not sure), shares on offer is 19mill = almost $611 (or pounds) per share.

Its 611 pence per share.

Or £6.11 if you prefer.

Its 611 pence per share.

Or £6.11 if you prefer.

Market cap 11.1 Billion GBP

Shares outstanding 18.54M

11.1b divided by 18.54m = 593 GBP per share

I just checked the FTSE price for Rolls Royce. £5.99p a share.

Share prices in the UK are always quoted in pence, then fractions of pence, therefore 599.10 would be £5.99 and one tenth of a penny.