What is the value of 20 Bank of England Five Pound notes uncirculated and consecutive serial SE55?

A Bank of England Five Pound note (Series D - blue - Duke of Wellington)(Chief Cashier D.H.F. Somerset - serial SE55), uncirculated and in absolute mint condition could fetch anything up to £25 GBP.

A consecutively numbered block of 20 uncirculated notes would appeal to certain collectors and would potentially realise a sum greater than 20 times the individual value.

A reputable coin dealer will be able to give a more accurate valuation.