Many thanks for your help and advice , it is great to know that the solution is relatively simple.
Re the age of the receiver, I know it is quite old but the sound it produces is exceptional and I don't think I could justify spending hundreds of pounds on a replacement at this time.
One question on the proposed set up, I have tried using the optical cable from the TV to the receiver but this produces 2 problems. Firstly the synchronisation between picture and sound when using the receiver is poor - when people are speaking the two don't match. Secondly, if my understanding is correct, the optical output from the TV only provides 5.1 output if using the TV tuner; if you connect other devices it reverts to 2.1. Presumably this would then require the receiver to upscale the signal but wouldn't there be a loss of sound quality?
Whilst the idea is simple I am not sure it is provides exactly what I am looking for. The problem I believe is caused by the fact that each of the devices being connected only has one HDMI socket and one optical output.
Look forward to receiving your thoughts/suggestion.
Your solution is virtually what I originally thought. My plan was to take an HDMI cable from each device to the splitter (input tetminals) and the one HDMI cable from the splitter output terminal to the TV and the other to the receiver; I would also then take an HDMI cable from the receiver monitor output to the TV - a little more complex and benefits simplification.
I would also run a coac/optical connection from each device to the receiver.
Your final thoughts much appreciated and then I will 'leave you in peace'!
Thanks for all your help.
Unfortunately because the receiver does not pass the audio input from the HDMI cables to the receiver speaker outputs the only way it is possible to use the surround-sound is by use of an optical/coax connection frome each device. As you said this necessitates me changing inputs each time but it appears the only way to get sound from the speakers - crazy I know! Because I only have a limited number of optical inputs into the receiver I have just purchased an optical to coax converter and plan to use this from the Blue Ray player to rhe receiver.