For the Maplin version

Resistors

All 0.4 W 1% metal film

R1,2   1k0        2 off    

Capacitors

C1-3   10nF disc    3 off    

Seems a bit small. I'd fit 100n capacitors. And a 22u electrolytic.

Semiconductors

IC1    74LS126           *
IC2    74LS04            
IC3    74LS03            is 74LS125 on my board
IC4    74LS11            
IC5    74LS00            
IC6    74LS32            is 74LS02 on my board
IC7    74LS27            *
IC8    74LS260           *
IC9    74LS74            
IC10   74LS374           
IC11   2716(M8)        

* I am short of these.

Miscellaneous

P.C. Board
Track pin 5 pkts 
Socket 24 Pin DIL
Socket 2×23 way 
P.C. Edgecon