Tiny Tots was a nursery comic published by the Amalgamated Press, starting on 22 October 1927. It incorporated Sunbeam in 1940 and The Rainbow in 1956, and continued until it was merged into Playhour on 24 January 1959.
It's difficult to arrive at individual values for every comic. Very early issues would probably onl turn up in lower grades and sell in the tens to hundreds of pounds depending on condition. A #1? A couple of undred in Good to Very Good I would say. Later issues are much cheaper as, well. who wants them? A very snmall collector's market so a lovely piece of comic nostagia could be bought for a few pounds for 1950s issues and a tenner or so for 1940s issues. More likely to be advertised in yearly bound volues which would sell in the £100 to £200 mark in Good grade, £200-£300 in VG/VG+.
Note: some PR issues may have no value. Selected issues in FN, VF or VF/NM may not exist in some titles.